0000950170-24-119039 | 10-Q | XBRL Viewer | Seacor Marine Holdings INC

Derivative Instruments and Hedging Strategies

9 Months Ended

Sep. 30, 2024

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments and Hedging Strategies

DERIVATIVE INSTRUMENTS AND HEDGING STRATEGIES

Derivative instruments are classified as either assets, which are included in other receivables in the accompanying consolidated balance sheets, or liabilities based on their individual fair values. The fair values of the Company’s derivative instruments were as follows (in thousands):


	September 30, 2024				December 31, 2023
	Derivative Asset		Derivative Liability		Derivative Asset		Derivative Liability
Derivatives not designated as hedging instruments:
Forward Exchange Contract	$	72	$	—	$	608	$	—

Economic Hedges. The Company may enter and settle forward currency exchange, option and future contracts with respect to various foreign currencies. These contracts enable the Company to buy currencies in the future at fixed exchange rates, which could offset possible consequences of changes in currency exchange rates with respect to the Company’s business conducted outside of the U.S. The Company generally does not enter into contracts with forward settlement dates beyond 12 to 18 months. During the fourth quarter of 2023, the Company entered into a forward exchange contract related to the purchase of hybrid battery power systems, the purchase price for which is denominated in Norwegian Kroner. During the nine months ended September 30, 2024, the Company recognized losses of $0.4 million on this contract which were recognized in earnings.

Cash Flow Hedges. The Company may from time to time enter into interest rate swap agreements designated as cash flow hedges. By entering into interest rate swap agreements, the Company can convert the variable interest component of certain of their outstanding borrowings to a fixed interest rate. The Company recognized losses on derivative instruments designated as cash flow hedges of $0.5 million for the nine months ended September 30, 2023 as a component of other comprehensive income (loss). As of September 30, 2024, there were no interest rate swaps held by the Company.

Other Derivative Instruments. The Company had no derivative instruments not designated as hedging instruments for the three and nine months ended September 30, 2023 and recognized gains (losses) on derivative instruments not designated as hedging instruments for the three and nine months ended September 30, 2024 as follows (in thousands):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2024		2023		2024			2023
Forward currency exchange, option, and future contracts	$	67	$	—	$	(372	)	$	—

The forward currency exchange contract relates to the purchase of hybrid battery power systems discussed in economic hedges above.

Long-term Debt (Tables)

9 Months Ended

Sep. 30, 2024

Debt Disclosure [Abstract]

Schedule of Long-term Debt Obligations

The Company’s long-term debt obligations as of September 30, 2024 and December 31, 2023 were as follows (in thousands):


	September 30, 2024			December 31, 2023
Guaranteed Notes	$	90,000		$	90,000
New Convertible Notes		35,000			35,000
2023 SMFH Credit Facility		109,800			118,950
Sea-Cat Crewzer III Term Loan Facility		11,752			14,227
SEACOR Delta Shipyard Financing		61,979			68,647
SEACOR Alpine Credit Facility		22,660			26,200
Total principal due for long-term debt		331,191			353,024
Current portion due within one year		(28,605	)		(28,365	)
Unamortized debt discount		(26,905	)		(32,885	)
Deferred financing costs		(3,356	)		(4,230	)
Long-term debt, less current portion	$	272,325		$	287,544

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-SubTopic 10
-Topic 210
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481568/470-20-55-69B

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69E
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481568/470-20-55-69E

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-3

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482925/835-30-45-2

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-3

Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477734/942-470-50-3

Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-8

Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-6

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-7

+ Details

Segment Information - Schedule of Segment Reporting Information, by Segment (Details) - USD ($)
$ in Thousands

3 Months Ended

9 Months Ended

Sep. 30, 2024

Sep. 30, 2023

Sep. 30, 2024

Sep. 30, 2023

Dec. 31, 2023

Segment Reporting Information [Line Items]

Operating Revenues

$ 68,916

$ 76,900

$ 201,553

$ 206,428

Direct Costs and Expenses

52,907

40,142

150,526

116,381

Direct Vessel (Loss) Profit

16,009

36,758

51,027

90,047

Lease expense

364

651

1,331

2,069

Administrative and general

11,019

12,300

33,825

37,636

Depreciation and amortization

12,928

13,462

38,749

40,799

Other Costs and Expenses

24,311

26,413

73,905

80,504

Gains on asset dispositions and impairments, net

1,821

(512)

1,857

3,352

Operating Income (Loss)

(6,481)

9,833

(21,021)

12,895

Historical cost

921,445

936,520

921,445

936,520

$ 918,823

Accumulated depreciation

(362,604)

(318,549)

(362,604)

(318,549)

(324,141)

Property and equipment

558,841

617,971

558,841

617,971

$ 594,682

Total Assets

673,468

^[1]

725,541

^[2]

673,468

^[1]

725,541

^[2]

Time Charter

Segment Reporting Information [Line Items]

Operating Revenues

63,313

68,668

188,225

184,887

Bareboat Charter

Segment Reporting Information [Line Items]

Operating Revenues

372

368

1,100

1,092

Other Marine Services

Segment Reporting Information [Line Items]

Operating Revenues

5,231

7,864

12,228

20,449

Personnel

Segment Reporting Information [Line Items]

Direct Costs and Expenses

21,940

19,943

65,176

59,690

Repairs and Maintenance

Segment Reporting Information [Line Items]

Direct Costs and Expenses

9,945

7,418

29,952

19,222

Drydocking

Segment Reporting Information [Line Items]

Direct Costs and Expenses

6,068

1,768

18,984

4,037

Insurance and Loss Reserves

Segment Reporting Information [Line Items]

Direct Costs and Expenses

2,584

1,833

7,421

7,012

Fuel, Lubes and Supplies

Segment Reporting Information [Line Items]

Direct Costs and Expenses

6,574

5,047

15,063

13,504

Other Direct Costs and Expenses

Segment Reporting Information [Line Items]

Direct Costs and Expenses

5,796

4,133

13,930

12,916

UNITED STATES

Segment Reporting Information [Line Items]

Operating Revenues

7,781

21,714

23,941

41,253

Direct Costs and Expenses

12,555

10,399

35,368

31,614

Direct Vessel (Loss) Profit

(4,774)

11,315

(11,427)

9,639

Lease expense

140

116

419

395

Depreciation and amortization

3,194

3,810

9,138

11,206

Historical cost

198,688

215,592

198,688

215,592

Accumulated depreciation

(103,139)

(96,597)

(103,139)

(96,597)

Property and equipment

95,549

118,995

95,549

118,995

Total Assets

119,579

^[1]

155,613

^[2]

119,579

^[1]

155,613

^[2]

UNITED STATES | Time Charter

Segment Reporting Information [Line Items]

Operating Revenues

6,593

16,236

21,247

28,921

UNITED STATES | Bareboat Charter

Segment Reporting Information [Line Items]

Operating Revenues

UNITED STATES | Other Marine Services

Segment Reporting Information [Line Items]

Operating Revenues

1,188

5,478

2,694

12,332

UNITED STATES | Personnel

Segment Reporting Information [Line Items]

Direct Costs and Expenses

6,297

6,712

18,362

19,204

UNITED STATES | Repairs and Maintenance

Segment Reporting Information [Line Items]

Direct Costs and Expenses

1,655

1,560

4,938

4,327

UNITED STATES | Drydocking

Segment Reporting Information [Line Items]

Direct Costs and Expenses

2,615

462

7,153

2,011

UNITED STATES | Insurance and Loss Reserves

Segment Reporting Information [Line Items]

Direct Costs and Expenses

799

332

2,138

2,455

UNITED STATES | Fuel, Lubes and Supplies

Segment Reporting Information [Line Items]

Direct Costs and Expenses

964

958

2,497

2,665

UNITED STATES | Other Direct Costs and Expenses

Segment Reporting Information [Line Items]

Direct Costs and Expenses

225

375

280

952

Africa and Europe

Segment Reporting Information [Line Items]

Operating Revenues

31,857

24,471

80,656

68,331

Direct Costs and Expenses

17,307

13,217

45,695

38,215

Direct Vessel (Loss) Profit

14,550

11,254

34,961

30,116

Lease expense

372

425

1,209

Depreciation and amortization

4,540

3,821

13,020

11,599

Historical cost

332,880

272,312

332,880

272,312

Accumulated depreciation

(119,953)

(89,338)

(119,953)

(89,338)

Property and equipment

212,927

182,974

212,927

182,974

Total Assets

260,352

^[1]

212,048

^[2]

260,352

^[1]

212,048

^[2]

Africa and Europe | Time Charter

Segment Reporting Information [Line Items]

Operating Revenues

28,809

22,528

76,411

65,938

Africa and Europe | Bareboat Charter

Segment Reporting Information [Line Items]

Operating Revenues

Africa and Europe | Other Marine Services

Segment Reporting Information [Line Items]

Operating Revenues

3,048

1,943

4,245

2,393

Africa and Europe | Personnel

Segment Reporting Information [Line Items]

Direct Costs and Expenses

6,083

5,089

16,233

14,427

Africa and Europe | Repairs and Maintenance

Segment Reporting Information [Line Items]

Direct Costs and Expenses

3,455

2,214

9,825

6,817

Africa and Europe | Drydocking

Segment Reporting Information [Line Items]

Direct Costs and Expenses

681

320

3,939

1,648

Africa and Europe | Insurance and Loss Reserves

Segment Reporting Information [Line Items]

Direct Costs and Expenses

599

573

1,752

1,311

Africa and Europe | Fuel, Lubes and Supplies

Segment Reporting Information [Line Items]

Direct Costs and Expenses

2,514

2,573

4,971

6,207

Africa and Europe | Other Direct Costs and Expenses

Segment Reporting Information [Line Items]

Direct Costs and Expenses

3,975

2,448

8,975

7,805

Middle East and Asia

Segment Reporting Information [Line Items]

Operating Revenues

16,786

16,354

52,305

52,484

Direct Costs and Expenses

13,020

11,233

39,964

26,814

Direct Vessel (Loss) Profit

3,766

5,121

12,341

25,670

Lease expense

229

202

Depreciation and amortization

3,261

3,721

10,004

11,117

Historical cost

250,456

285,721

250,456

285,721

Accumulated depreciation

(97,997)

(98,481)

(97,997)

(98,481)

Property and equipment

152,459

187,240

152,459

187,240

Total Assets

175,236

^[1]

210,401

^[2]

175,236

^[1]

210,401

^[2]

Middle East and Asia | Time Charter

Segment Reporting Information [Line Items]

Operating Revenues

16,411

16,087

50,961

48,678

Middle East and Asia | Bareboat Charter

Segment Reporting Information [Line Items]

Operating Revenues

Middle East and Asia | Other Marine Services

Segment Reporting Information [Line Items]

Operating Revenues

375

267

1,344

3,806

Middle East and Asia | Personnel

Segment Reporting Information [Line Items]

Direct Costs and Expenses

5,769

5,157

18,662

15,264

Middle East and Asia | Repairs and Maintenance

Segment Reporting Information [Line Items]

Direct Costs and Expenses

3,318

2,623

9,473

4,519

Middle East and Asia | Drydocking

Segment Reporting Information [Line Items]

Direct Costs and Expenses

832

1,056

3,022

(723)

Middle East and Asia | Insurance and Loss Reserves

Segment Reporting Information [Line Items]

Direct Costs and Expenses

927

711

2,343

2,616

Middle East and Asia | Fuel, Lubes and Supplies

Segment Reporting Information [Line Items]

Direct Costs and Expenses

1,043

743

3,344

2,310

Middle East and Asia | Other Direct Costs and Expenses

Segment Reporting Information [Line Items]

Direct Costs and Expenses

1,131

943

3,120

2,828

Latin America

Segment Reporting Information [Line Items]

Operating Revenues

12,492

14,361

44,651

44,360

Direct Costs and Expenses

10,025

5,293

29,499

19,738

Direct Vessel (Loss) Profit

2,467

9,068

15,152

24,622

Lease expense

104

258

263

Depreciation and amortization

1,933

2,110

6,587

6,877

Historical cost

139,421

162,895

139,421

162,895

Accumulated depreciation

(41,515)

(34,133)

(41,515)

(34,133)

Property and equipment

97,906

128,762

97,906

128,762

Total Assets

118,301

^[1]

147,479

^[2]

118,301

^[1]

147,479

^[2]

Latin America | Time Charter

Segment Reporting Information [Line Items]

Operating Revenues

11,500

13,817

39,606

41,350

Latin America | Bareboat Charter

Segment Reporting Information [Line Items]

Operating Revenues

372

368

1,100

1,092

Latin America | Other Marine Services

Segment Reporting Information [Line Items]

Operating Revenues

620

176

3,945

1,918

Latin America | Personnel

Segment Reporting Information [Line Items]

Direct Costs and Expenses

3,791

2,985

11,919

10,795

Latin America | Repairs and Maintenance

Segment Reporting Information [Line Items]

Direct Costs and Expenses

1,517

1,021

5,716

3,559

Latin America | Drydocking

Segment Reporting Information [Line Items]

Direct Costs and Expenses

1,940

(70)

4,870

1,101

Latin America | Insurance and Loss Reserves

Segment Reporting Information [Line Items]

Direct Costs and Expenses

259

217

1,188

630

Latin America | Fuel, Lubes and Supplies

Segment Reporting Information [Line Items]

Direct Costs and Expenses

2,053

773

4,251

2,322

Latin America | Other Direct Costs and Expenses

Segment Reporting Information [Line Items]

Direct Costs and Expenses

$ 465

$ 367

$ 1,555

$ 1,331

[1]	Total Assets by region does not include corporate assets of $36.0 million as of September 30, 2024.
[2]	Total Assets by region does not include corporate assets of $54.8 million as of September 30, 2023.

Unaudited Condensed Consolidated Statements of Changes In Equity - USD ($) $ in Thousands	Total	Performance Stock [Member]	Common Stock [Member]	Common Stock [Member] Performance Stock [Member]	Common Stock [Member] Director [Member]	Additional Paid-In Capital [Member]	Treasury Stock [Member]	Treasury Stock [Member] Performance Stock [Member]	Treasury Stock [Member] Director [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income [Member]	Non-Controlling Interests In Subsidiaries [Member]
Balance at Dec. 31, 2022	$ 379,146		$ 272			$ 466,669	$ (1,852)			$ (93,111)	$ 6,847	$ 321
Balance (in shares) at Dec. 31, 2022			26,702,161				248,638
Restricted stock grants	6		$ 6
Restricted stock grants (in shares)			525,397
Amortization of share awards	4,483					4,483
Exercise of options	6					6
Exercise of options (in shares)			834
Exercise of warrants			$ 1				$ (1)
Exercise of warrants (in shares)			117,394				121
Restricted stock vesting	(2,368)						$ (2,368)
Restricted stock vesting (in shares)			(232,239)				232,239
Director share awards	1		$ 1
Director share awards (in shares)			60,938
Forfeiture of employee share awards (in shares)			(15,000)
Net Loss	(15,043)									(15,043)
Other comprehensive income (loss)	(594)										(594)
Balance at Sep. 30, 2023	365,637		$ 280			471,158	$ (4,221)			(108,154)	6,253	321
Balance (in shares) at Sep. 30, 2023			27,159,485				480,998
Balance at Jun. 30, 2023	366,855		$ 280			469,618	$ (4,221)			(107,271)	8,128	321
Balance (in shares) at Jun. 30, 2023			27,159,485				480,998
Amortization of share awards	1,540					1,540
Net Loss	(883)									(883)
Other comprehensive income (loss)	(1,875)										(1,875)
Balance at Sep. 30, 2023	365,637		$ 280			471,158	$ (4,221)			(108,154)	6,253	321
Balance (in shares) at Sep. 30, 2023			27,159,485				480,998
Balance at Dec. 31, 2023	$ 374,224		$ 280			472,692	$ (4,221)			(102,425)	7,577	321
Balance (in shares) at Dec. 31, 2023	27,665,792		27,184,778				481,014
Restricted stock grants	$ 6		$ 6
Restricted stock grants (in shares)			563,271
Amortization of share awards	4,829					4,829
Exercise of options	$ 140					140
Exercise of options (in shares)	12,166		12,166
Restricted stock vesting	$ (3,120)	$ (769)					$ (3,120)	$ (769)
Restricted stock vesting (in shares)			(251,333)	96,150	(3,274)		251,333	61,305	3,274
Director share awards	1		$ 1
Director share awards (in shares)			43,504
Net Loss	(51,898)									(51,898)
Other comprehensive income (loss)	1,595									(51)	1,646
Balance at Sep. 30, 2024	$ 325,008		$ 287			477,661	$ (8,110)			(154,374)	9,223	321
Balance (in shares) at Sep. 30, 2024	28,442,188		27,645,262				796,926
Balance at Jun. 30, 2024	$ 337,938		$ 286			476,020	$ (8,110)			(138,028)	7,449	321
Balance (in shares) at Jun. 30, 2024			27,636,184				796,926
Amortization of share awards	1,603					1,603
Exercise of options	38					38
Exercise of options (in shares)			3,000
Director share awards	1		$ 1
Director share awards (in shares)			6,078
Net Loss	(16,346)									(16,346)
Other comprehensive income (loss)	1,774										1,774
Balance at Sep. 30, 2024	$ 325,008		$ 287			$ 477,661	$ (8,110)			$ (154,374)	$ 9,223	$ 321
Balance (in shares) at Sep. 30, 2024	28,442,188		27,645,262				796,926

Basis of Presentation and Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2024

Accounting Policies [Abstract]

Recently Issued Accounting Standards

Recently Issued Accounting Standards.

On December 14, 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, which requires public entities to disclose information about their effective tax rate reconciliation and information on income taxes paid. The guidance is effective for fiscal years beginning after December 15, 2024. While early adoption is permitted, the Company has determined it will not early adopt the standard. The Company has not yet determined the impact that the adoption of the standard will have on the Company’s consolidated financial position, results of operations and disclosures.

On November 27, 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures, which requires public entities to disclose information about their reportable segments’ significant expenses on an interim and annual basis. The guidance is effective for fiscal years beginning after December 15, 2023 and interim periods within the fiscal years beginning after December 15, 2024. While early adoption is permitted, the Company has determined it will not early adopt the standard. The Company has not yet determined the impact that the adoption of the standard will have on the Company’s consolidated financial position, results of operations and disclosures.

On October 9, 2023, the FASB issued ASU 2023-06, Disclosure Improvements: Codification Amendments in Response to the United States Securities and Exchange Commission’s (“SEC”) Disclosure Update and Simplification Initiative, which amends the disclosure or presentation requirements related to various subtopics in the FASB Accounting Standards Codification. The effective date is contingent on when the SEC removes the related disclosure from Regulation S-X or Regulation S-K, with early adoption prohibited. The Company does not believe the adoption of the standard will have a material effect on the Company’s consolidated financial position, results of operations and disclosures.

Basis of Consolidation

Basis of Consolidation. The consolidated financial statements include the accounts of SEACOR Marine and its controlled subsidiaries. Control is generally deemed to exist if the Company has greater than 50% of the voting rights of a subsidiary. All significant intercompany accounts and transactions are eliminated in the combination and consolidation.

Noncontrolling interests in consolidated subsidiaries are included in the consolidated balance sheets as a separate component of equity. The Company reports consolidated net income (loss) inclusive of both the Company’s and the noncontrolling interests’ share, as well as the amounts of consolidated net income (loss) attributable to each of the Company and the noncontrolling interests. If a subsidiary is deconsolidated upon a change in control, any retained noncontrolling equity investment in the former controlled subsidiary is measured at fair value and a gain or loss is recognized in net income (loss) based on such fair value. If a subsidiary is consolidated upon the business acquisition of controlling interests by the Company, any previous noncontrolled equity investment in the subsidiary is measured at fair value and a gain or loss is recognized in net income (loss) based on such fair value.

The Company employs the equity method of accounting for investments in 50% or less owned companies that it does not control but has the ability to exercise significant influence over the operating and financial policies of the business venture. Significant influence is generally deemed to exist if the Company has between 20% and 50% of the voting rights of a business venture but may exist when the Company’s ownership percentage is less than 20%. In certain circumstances, the Company may have an economic interest in excess of 50% but may not control and consolidate the business venture. Conversely, the Company may have an economic interest less than 50% but may control and consolidate the business venture. The Company reports its investments in and advances to these business ventures in the accompanying consolidated balance sheets as investments, at equity, and advances to 50% or less owned companies. The Company reports its share of earnings from investments in 50% or less owned companies in the accompanying consolidated statements of income (loss) as equity in earnings of 50% or less owned companies, net of tax.

Certain reclassifications were made to previously reported amounts in the consolidated financial statements and notes thereto to make them consistent with the current period presentation.

Use of Estimates

Use of Estimates. The preparation of financial statements in conformity with accounting principles generally accepted in the United States (“U.S.”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from estimates and those differences may be material.

Revenue Recognition

Revenue Recognition. Revenue is recognized when (or as) the Company transfers promised goods or services to its customers in amounts that reflect the consideration to which the Company expects to be entitled to in exchange for those goods or services, which occurs when (or as) the Company satisfies its contractual obligations and transfers over control of the promised goods or services to its customers. The Company recognizes revenue, net of sales taxes, based on its estimates of the consideration the Company expects to receive. Costs to obtain or fulfill a contract are expensed as incurred.

The Company earns revenue primarily from the time charter and bareboat charter of vessels to customers. Since the Company charges customers based upon daily rates of hire, vessel revenues are recognized on a daily basis throughout the contract period. Under a time charter, the Company provides a vessel to a customer and is responsible for all operating expenses, typically excluding fuel. Under a bareboat charter, the Company provides a vessel to a customer and the customer assumes responsibility for all operating expenses and assumes all risks of operation. In the U.S. Gulf of Mexico, time charter durations and rates are typically established in the context of master service agreements that govern the terms and conditions of the charter.

In the Company’s operating areas, contracts or charters vary in length from several days to multi-year periods. Many of the Company’s contracts and charters include cancellation clauses without early termination penalties. As a result of cancellations, options and frequent renewals, the stated duration of charters may not correlate with the length of time the vessel is contracted for to provide services to a particular customer.

The Company contracts with various customers to carry out management services for vessels as agents for and on behalf of ship owners. These services include crew management, technical management, commercial management, insurance arrangements, sale and purchase of vessels, provisions and bunkering. As the manager of the vessels, the Company undertakes to use its best endeavors to provide the agreed management services as agents for and on behalf of the owners in accordance with sound ship management practice and to protect and promote the interest of the owners in all matters relating to the provision of services thereunder. The Company also contracts with various customers to carry out management services regarding engineering for vessel construction and vessel conversions. The vast majority of the ship management agreements span one to three years and are typically billed on a monthly basis. The Company transfers control of the service to the customer and satisfies its performance obligation over the term of the contract, and therefore recognizes revenue over the term of the contract while related costs are expensed as incurred.

Revenue that does not meet these criteria is deferred until the criteria is met and is considered a contract liability and is recognized as such. Contract liabilities, which are included in unearned revenue in the accompanying consolidated balance sheets, as of September 30, 2024 and December 31, 2023 were as follows (in thousands):


	September 30, 2024			December 31, 2023
Balance at beginning of period	$	687		$	2,333
Unearned revenues during the period		5,859			6,501
Revenues recognized during the period		(4,074	)		(8,147	)
Balance at end of period	$	2,472		$	687

As of September 30, 2024 and December 31, 2023, the Company had unearned revenue of $2.5 million and $0.7 million, respectively, primarily related to mobilization of vessels.

Direct Operating Expenses

Direct Operating Expenses. Direct operating costs and expenses, other than leased-in equipment expense, consist primarily of costs and expenses such as: personnel; repairs and maintenance; drydocking; insurance and loss reserves; fuel, lubes and supplies; and other expenses, which include costs such as brokers’ commissions, communication costs, expenses incurred in mobilizing vessels between geographic regions, third party ship management fees, freight expenses, and customs and importation duties. Direct operating costs are expensed as incurred.

Cash and Cash Equivalents

Cash and Cash Equivalents. The Company considers all highly liquid investments, with an original maturity of three months or less from the date purchased, to be cash equivalents.

Restricted Cash

Restricted Cash. Restricted cash primarily relates to banking facility requirements.

Trade and Other Receivables and Allowance for Credit Losses

Trade and Other Receivables and Allowance for Credit Losses. Customers are primarily major integrated national, international oil companies, large independent oil and natural gas exploration and production companies and established wind farm construction companies. Customers are granted credit on a short-term basis and the related credit risks are minimal. Other receivables consist primarily of operating expenses the Company incurs in relation to vessels it manages for other entities, as well as insurance and income tax receivables. The Company routinely reviews its receivables and makes provisions for expected credit losses utilizing the Current Expected Credit Losses model (“CECL”). The CECL model utilizes a lifetime expected credit loss measurement objective for the recognition of credit losses for loans and other receivables at the time the financial asset is originated or

acquired. However, those provisions are estimates and actual results may materially differ from those estimates. After collection efforts have been exhausted, trade receivables that are deemed uncollectible are removed from both accounts receivable and the allowance for credit losses.

Property and Equipment

Property and Equipment. Equipment, stated at cost, is depreciated using the straight-line method over the estimated useful life of the asset to an estimated salvage value. With respect to each class of asset, the estimated useful life is based upon a newly built asset being placed into service and represents the time period beyond which it is typically not justifiable for the Company to continue to operate the asset in the same or similar manner. From time to time, the Company may acquire older vessels that have already exceeded the Company’s useful life policy, in which case the Company depreciates such assets based on its best estimate of the asset’s remaining useful life, typically the period until the next survey or certification date. As of September 30, 2024, the estimated useful life of the Company’s new offshore support vessels was 20 years.

Equipment maintenance and repair costs and the costs of routine overhauls, drydockings and inspections performed on vessels and equipment are charged to operating expense as incurred. Expenditures that extend the useful life or improve the marketing and commercial characteristics of equipment as well as major renewals and improvements to other properties are capitalized.

Certain interest costs incurred during the construction of equipment are capitalized as part of the assets’ carrying values and are amortized over such assets’ estimated useful lives. There was no capitalized interest recognized during the nine months ended September 30, 2024 and 2023.

Impairment of Long-Lived Assets and Impairment of 50% or Less Owned Companies

Impairment of Long-Lived Assets. The Company performs an impairment analysis of long-lived assets used in operations when indicators of impairment are present. These indicators may include a significant decrease in the market price of a long-lived asset or asset group, a significant adverse change in the extent or manner in which a long-lived asset or asset group is being used or in its physical condition, or a current period operating or cash flow loss combined with a history of operating or cash flow losses or a forecast that demonstrates continuing losses associated with the use of a long-lived asset or asset group. If the carrying values of the assets are not recoverable, as determined by their estimated future undiscounted cash flows, the estimated fair value of the assets or asset groups are compared to their current carrying values and impairment charges are recorded if the carrying value exceeds fair value.

During the nine months ended September 30, 2024, the Company did not record impairment charges on any owned or leased-in vessels. During the nine months ended September 30, 2023, the Company recorded impairment charges of $0.3 million for one leased-in anchor handling towing supply vessel (“AHTS”) to adjust for indicative future cash flows. There were no impairments of other owned or leased-in vessels. Impairment charges are included in gains (losses) on asset dispositions and impairments in the accompanying consolidated statements of income (loss). Estimated fair values for the Company owned vessels were established by independent appraisers based on researched market information, replacement cost information and other data.

For vessel classes and individual vessels with indicators of impairment as of September 30, 2024, the Company estimated that their future undiscounted cash flows exceeded their current carrying values. However, the Company’s estimates of future undiscounted cash flows are highly subjective as utilization and rates per day worked are uncertain, especially in light of the continued volatility in commodity prices as well as the timing and cost of reactivating cold-stacked vessels. If market conditions decline, changes in the Company’s expectations on future cash flows may result in recognizing additional impairment charges related to its long-lived assets in future periods. For any vessel or vessel class that has indicators of impairment and is deemed not recoverable through future operations, the Company determines the fair value of the vessel or vessel class. If the fair value determination is less than the carrying value of the vessel or vessel class, an impairment is recognized to reduce

the carrying value to fair value. Fair value determination is primarily accomplished by obtaining independent valuations of vessel or vessel classes from qualified third-party appraisers.

Impairment of 50% or Less Owned Companies. Investments in 50% or less owned companies are reviewed periodically to assess whether there is an other-than-temporary decline in the carrying value of the investment. In its evaluation, the Company considers, among other items, recent and expected financial performance and returns, impairments recorded by the investee and the capital structure of the investee. When the Company determines the estimated fair value of an investment is below carrying value and the decline is other-than-temporary, the investment is written down to its estimated fair value. Actual results may vary from the Company’s estimates due to the uncertainty regarding projected financial performance, the severity and expected duration of declines in value and the available liquidity in the capital markets to support the continuing operations of the investee, among other factors. Although the Company believes its assumptions and estimates are reasonable, the investee’s actual performance compared with the estimates could produce different results and lead to additional impairment charges in future periods. During the nine months ended September 30, 2024 and 2023, the Company did not recognize any impairment charges related to its 50% or less owned companies.

Income Taxes

Income Taxes. During the nine months ended September 30, 2024, the Company’s effective income tax rate of (0.5)% was primarily due to foreign taxes paid that are not creditable against U.S. income taxes and foreign losses for which there is no benefit for U.S. income tax purposes.

Accumulated Other Comprehensive Income (Loss)

Accumulated Other Comprehensive Income (Loss). The components of accumulated other comprehensive income were as follows (in thousands):


	SEACOR Marine Holdings Inc. Stockholders’ Equity
	Foreign Currency Translation Adjustments		Derivative Gains (Losses) on Cash Flow Hedges, net		Total Other Comprehensive Income
December 31, 2023	$	7,577	$	—	$	7,577
Other comprehensive income		1,646		—		1,646
Balance as of September 30, 2024	$	9,223	$	—	$	9,223

Earnings (Loss) Per Share

Earnings (Loss) Per Share. Basic earnings/loss per share of Common Stock of SEACOR Marine is computed based on the weighted average number of shares of Common Stock and warrants to purchase Common Stock at an exercise price of $0.01 per share (“Warrants”) issued and outstanding during the relevant periods. The Warrants are included in the basic earnings/loss per share of Common Stock because the shares issuable upon exercise of the Warrants are issuable for de minimis cash consideration and therefore not anti-dilutive. Diluted earnings/loss per share of Common Stock is computed based on the weighted average number of shares of Common Stock and Warrants issued and outstanding plus the effect of other potentially dilutive securities through the application of the treasury stock method and the if-converted method that assumes all shares of Common Stock have been issued and outstanding during the relevant periods pursuant to the conversion of the New Convertible Notes unless anti-dilutive.

For the three and nine months ended September 30, 2024 and 2023, diluted loss per share of Common Stock excluded 2,978,724 shares of Common Stock issuable upon conversion of the New Convertible Notes as the effect of their inclusion in the computation would be anti-dilutive.

In addition, for the three and nine months ended September 30, 2024 and 2023 diluted loss per share of Common Stock excluded 1,392,226 and 1,642,084 shares of restricted stock, respectively, and 1,013,865 and 1,026,031 shares of Common Stock, respectively, issuable upon exercise of outstanding stock options, as the effect of their inclusion in the computation would be anti-dilutive.

Segment Information - Schedule of Segment Reporting Information, by Segment (Parenthetical) (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023
Segment Reporting Information [Line Items]
Assets, Total	$ 709,444	$ 780,336
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Assets, Total	$ 36,000		$ 54,800

- Definition

Amount of asset recognized for present right to economic benefit.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 48
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-48

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 49
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-49

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 270
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482964/270-10-50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (ee)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 5: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-22

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (bb)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481203/810-10-50-3

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 25
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481231/810-10-45-25

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481687/323-10-50-3

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-28

Reference 12: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481372/852-10-55-10

Reference 13: http://www.xbrl.org/2003/role/exampleRef
-Topic 946
-SubTopic 830
-Name Accounting Standards Codification
-Section 55
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479168/946-830-55-12

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(12))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(8))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(18))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A

Reference 18: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(ii))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A

Reference 19: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iii))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(5))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(B))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B

Reference 26: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B

Reference 27: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(5))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B

Reference 28: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481404/852-10-50-7

Reference 29: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 30
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-30

Reference 30: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(11))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

+ Details

Equipment Acquisitions and Dispositions - Additional Information (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2024 USD ($) Equipment	Sep. 30, 2023 USD ($) Vessel Liftboat
Property Plant And Equipment [Line Items]
Number of equipment deliveries \| Equipment	0
Proceeds from disposition of property and equipment	$ 2,417	$ 8,038
Platform Supply Vessels
Property Plant And Equipment [Line Items]
Payments to acquire property, plant, and equipment, including fair value hedges	4,300
Liftboat
Property Plant And Equipment [Line Items]
Number of equipment sold, classified as held for sale \| Liftboat		3
Specialty Vessel
Property Plant And Equipment [Line Items]
Number of equipment sold, classified as held for sale \| Vessel		1
Platform Supply Vessels And Fast Support Vessels
Property Plant And Equipment [Line Items]
Proceeds from disposition of property and equipment	2,400	$ 8,000
Gain (loss) on disposition of property, plant and equipment	$ 1,900	$ 2,700

Stock Based Compensation

9 Months Ended

Sep. 30, 2024

Share-Based Payment Arrangement [Abstract]

Stock Based Compensation

10.

STOCK BASED COMPENSATION

Transactions in connection with the Company’s Equity Incentive Plans during the nine months ended September 30, 2024 were as follows:


Restricted Stock Activity:
Outstanding as of December 31, 2023	1,642,084
Granted	637,698
Vested (1)	(887,556	)
Forfeited	—
Outstanding as of September 30, 2024 (2)	1,392,226

Stock Option Activity:
Outstanding as of December 31, 2023	1,026,031
Granted	—
Exercised	(12,166	)
Forfeited	—
Outstanding as of September 30, 2024	1,013,865

(1)

Includes 157,455 vested grants of performance-based restricted stock units.

(2)

Includes 215,853 grants of performance-based restricted stock units that satisfied the performance obligation and are therefore likely to vest and excludes 326,597 grants of performance-based restricted stock units that are not considered outstanding until such time that they become probable to vest.

For the nine months ended September 30, 2024, the Company acquired for treasury (i) 254,607 shares of Common Stock from its directors and employees to cover their tax withholding obligations upon the lapsing of restrictions on share awards for an aggregate purchase price of $3.1 million, and (ii) 61,305 shares of Common Stock from its employees to cover their tax withholding obligations upon the lapsing of restrictions on performance-based share awards for an aggregate purchase price of $0.8 million. These shares were purchased in accordance with the terms of the Company’s 2020 Equity Incentive Plan and 2022 Equity Incentive Plan, as applicable.

Leases - Summary of Supplemental Cash Flow Information Related to Leases (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Leases [Abstract]
Operating cash outflows from operating leases	$ 1,658
Financing cash outflows from finance leases	28	$ 522
Right-of-use assets obtained for operating lease liabilities	0
Right-of-use assets obtained for finance lease liabilities	$ 7

Income Taxes

9 Months Ended

Sep. 30, 2024

Income Tax Disclosure [Abstract]

Income Taxes

INCOME TAXES

The following table reconciles the difference between the statutory federal income tax rate for the Company and the effective income tax rate for the nine months ended September 30, 2024:


Statutory rate	(21.0	)%
Income (loss) of foreign subsidiaries not includable in U.S. return and foreign withholding tax	18.2	%
162(m) - Executive compensation	2.6	%
Other	(0.3	)%
Effective income tax rate	(0.5	)%

- Definition

The entire disclosure for income tax.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 231
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482663/740-10-55-231

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12C
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12C

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12B

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 270
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477891/740-270-50-1

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 6.I.5.Q1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479360/740-10-S99-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480990/946-20-50-13

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/740/tableOfContent

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-14

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 21
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-21

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 17
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-17

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 11.C)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479360/740-10-S99-2

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482603/740-30-50-2

+ Details

Stock Based Compensation - Additional Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Treasury stock, value acquired cost method	$ 3,120	$ 2,368
Lapsing of Restrictions on Share Awards
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Treasury stock, shares acquired	254,607
Treasury stock, value acquired cost method	$ 3,100
Lapsing of Restrictions on Performance-based Share Awards
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Treasury stock, shares acquired	61,305
Treasury stock, value acquired cost method	$ 800

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 35
-Paragraph 1D
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480483/718-10-35-1D

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 35
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480483/718-10-35-3

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(ii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(01)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(02)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(03)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(04)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(ii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(01)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(02)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(03)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (e)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (e)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(ii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 26: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 27: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iv)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 28: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(v)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Segment Information (Tables)

9 Months Ended

Sep. 30, 2024

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

The following tables summarize the operating results, capital expenditures and assets of the Company’s reportable segments for the periods indicated (in thousands):


	United States (primarily Gulf of Mexico)			Africa and Europe		Middle East and Asia		Latin America		Total
For the Three Months Ended September 30, 2024
Operating Revenues:
Time charter	$	6,593		$	28,809	$	16,411	$	11,500	$	63,313
Bareboat charter		—			—		—		372		372
Other marine services		1,188			3,048		375		620		5,231
		7,781			31,857		16,786		12,492		68,916
Direct Costs and Expenses:
Operating:
Personnel		6,297			6,083		5,769		3,791		21,940
Repairs and maintenance		1,655			3,455		3,318		1,517		9,945
Drydocking		2,615			681		832		1,940		6,068
Insurance and loss reserves		799			599		927		259		2,584
Fuel, lubes and supplies		964			2,514		1,043		2,053		6,574
Other		225			3,975		1,131		465		5,796
		12,555			17,307		13,020		10,025		52,907
Direct Vessel (Loss) Profit	$	(4,774	)	$	14,550	$	3,766	$	2,467		16,009
Other Costs and Expenses:
Lease expense	$	140		$	75	$	73	$	76		364
Administrative and general											11,019
Depreciation and amortization		3,194			4,540		3,261		1,933		12,928
											24,311
Gains on asset dispositions and impairments, net											1,821
Operating loss										$	(6,481	)


	United States (primarily Gulf of Mexico)			Africa and Europe			Middle East and Asia			Latin America			Total
For the Nine Months Ended September 30, 2024
Operating Revenues:
Time charter	$	21,247		$	76,411		$	50,961		$	39,606		$	188,225
Bareboat charter		—			—			—			1,100			1,100
Other marine services		2,694			4,245			1,344			3,945			12,228
		23,941			80,656			52,305			44,651			201,553
Direct Costs and Expenses:
Operating:
Personnel		18,362			16,233			18,662			11,919			65,176
Repairs and maintenance		4,938			9,825			9,473			5,716			29,952
Drydocking		7,153			3,939			3,022			4,870			18,984
Insurance and loss reserves		2,138			1,752			2,343			1,188			7,421
Fuel, lubes and supplies		2,497			4,971			3,344			4,251			15,063
Other		280			8,975			3,120			1,555			13,930
		35,368			45,695			39,964			29,499			150,526
Direct Vessel (Loss) Profit	$	(11,427	)	$	34,961		$	12,341		$	15,152			51,027
Other Costs and Expenses:
Lease expense	$	419		$	425		$	229		$	258			1,331
Administrative and general														33,825
Depreciation and amortization		9,138			13,020			10,004			6,587			38,749
														73,905
Gains on asset dispositions and impairments, net														1,857
Operating loss													$	(21,021	)
As of September 30, 2024
Property and Equipment:
Historical Cost	$	198,688		$	332,880		$	250,456		$	139,421		$	921,445
Accumulated Depreciation		(103,139	)		(119,953	)		(97,997	)		(41,515	)		(362,604	)
	$	95,549		$	212,927		$	152,459		$	97,906		$	558,841
Total Assets (1)	$	119,579		$	260,352		$	175,236		$	118,301		$	673,468

(1)

Total Assets by region does not include corporate assets of $36.0 million as of September 30, 2024.


	United States (primarily Gulf of Mexico)		Africa and Europe		Middle East and Asia		Latin America			Total
For the Three Months Ended September 30, 2023
Operating Revenues:
Time charter	$	16,236	$	22,528	$	16,087	$	13,817		$	68,668
Bareboat charter		—		—		—		368			368
Other marine services		5,478		1,943		267		176			7,864
		21,714		24,471		16,354		14,361			76,900
Direct Costs and Expenses:
Operating:
Personnel		6,712		5,089		5,157		2,985			19,943
Repairs and maintenance		1,560		2,214		2,623		1,021			7,418
Drydocking		462		320		1,056		(70	)		1,768
Insurance and loss reserves		332		573		711		217			1,833
Fuel, lubes and supplies		958		2,573		743		773			5,047
Other		375		2,448		943		367			4,133
		10,399		13,217		11,233		5,293			40,142
Direct Vessel Profit	$	11,315	$	11,254	$	5,121	$	9,068			36,758
Other Costs and Expenses:
Lease expense	$	116	$	372	$	59	$	104			651
Administrative and general											12,300
Depreciation and amortization		3,810		3,821		3,721		2,110			13,462
											26,413
Losses on asset dispositions and impairments, net											(512	)
Operating income										$	9,833


	United States (primarily Gulf of Mexico)			Africa and Europe			Middle East and Asia			Latin America			Total
For the Nine Months Ended September 30, 2023
Operating Revenues:
Time charter	$	28,921		$	65,938		$	48,678		$	41,350		$	184,887
Bareboat charter		—			—			—			1,092			1,092
Other marine services		12,332			2,393			3,806			1,918			20,449
		41,253			68,331			52,484			44,360			206,428
Direct Costs and Expenses:
Operating:
Personnel		19,204			14,427			15,264			10,795			59,690
Repairs and maintenance		4,327			6,817			4,519			3,559			19,222
Drydocking		2,011			1,648			(723	)		1,101			4,037
Insurance and loss reserves		2,455			1,311			2,616			630			7,012
Fuel, lubes and supplies		2,665			6,207			2,310			2,322			13,504
Other		952			7,805			2,828			1,331			12,916
		31,614			38,215			26,814			19,738			116,381
Direct Vessel Profit	$	9,639		$	30,116		$	25,670		$	24,622			90,047
Other Costs and Expenses:
Lease expense	$	395		$	1,209		$	202		$	263			2,069
Administrative and general														37,636
Depreciation and amortization		11,206			11,599			11,117			6,877			40,799
														80,504
Gains on asset dispositions and impairments, net														3,352
Operating income													$	12,895
As of September 30, 2023
Property and Equipment:
Historical Cost	$	215,592		$	272,312		$	285,721		$	162,895		$	936,520
Accumulated Depreciation		(96,597	)		(89,338	)		(98,481	)		(34,133	)		(318,549	)
	$	118,995		$	182,974		$	187,240		$	128,762		$	617,971
Total Assets (1)	$	155,613		$	212,048		$	210,401		$	147,479		$	725,541

(1)

Total Assets by region does not include corporate assets of $54.8 million as of September 30, 2023.

Derivative Instruments and Hedging Strategies (Tables)

9 Months Ended

Sep. 30, 2024

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Fair Value of Derivative Assets and Liabilities

The fair values of the Company’s derivative instruments were as follows (in thousands):


	September 30, 2024				December 31, 2023
	Derivative Asset		Derivative Liability		Derivative Asset		Derivative Liability
Derivatives not designated as hedging instruments:
Forward Exchange Contract	$	72	$	—	$	608	$	—

Schedule of Gains (Losses) on Derivative Instruments not Designated as Hedging Instruments

The Company had no derivative instruments not designated as hedging instruments for the three and nine months ended September 30, 2023 and recognized gains (losses) on derivative instruments not designated as hedging instruments for the three and nine months ended September 30, 2024 as follows (in thousands):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2024		2023		2024			2023
Forward currency exchange, option, and future contracts	$	67	$	—	$	(372	)	$	—

Basis of Presentation and Accounting Policies

9 Months Ended

Sep. 30, 2024

Basis Of Presentation And Accounting Policies [Abstract]

Basis of Presentation and Accounting Policies

BASIS OF PRESENTATION AND ACCOUNTING POLICIES

The condensed consolidated financial statements include the accounts of SEACOR Marine Holdings Inc. and its consolidated subsidiaries (the “Company”). In the opinion of management, all adjustments (consisting of normal recurring adjustments) have been made to fairly present the unaudited condensed consolidated financial statements for the periods indicated. Results of operations for the interim periods presented are not necessarily indicative of operating results for the full year or any future periods.

Certain information and footnote disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) have been condensed or omitted. These condensed consolidated financial statements should be read in conjunction with the Company’s financial statements and related notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023 (the “2023 Annual Report”).

Unless the context otherwise indicates, any reference in this Quarterly Report on Form 10-Q to the “Company” refers to SEACOR Marine Holdings Inc. and its consolidated subsidiaries, and any reference in this Quarterly Report on Form 10-Q to “SEACOR Marine” refers to SEACOR Marine Holdings Inc. without its consolidated subsidiaries.

Recently Issued Accounting Standards.

Accounting Policies.

Certain reclassifications were made to previously reported amounts in the consolidated financial statements and notes thereto to make them consistent with the current period presentation.


	September 30, 2024			December 31, 2023
Balance at beginning of period	$	687		$	2,333
Unearned revenues during the period		5,859			6,501
Revenues recognized during the period		(4,074	)		(8,147	)
Balance at end of period	$	2,472		$	687

As of September 30, 2024 and December 31, 2023, the Company had unearned revenue of $2.5 million and $0.7 million, respectively, primarily related to mobilization of vessels.

Cash and Cash Equivalents. The Company considers all highly liquid investments, with an original maturity of three months or less from the date purchased, to be cash equivalents.

Restricted Cash. Restricted cash primarily relates to banking facility requirements.

the carrying value to fair value. Fair value determination is primarily accomplished by obtaining independent valuations of vessel or vessel classes from qualified third-party appraisers.

Accumulated Other Comprehensive Income (Loss). The components of accumulated other comprehensive income were as follows (in thousands):


	SEACOR Marine Holdings Inc. Stockholders’ Equity
	Foreign Currency Translation Adjustments		Derivative Gains (Losses) on Cash Flow Hedges, net		Total Other Comprehensive Income
December 31, 2023	$	7,577	$	—	$	7,577
Other comprehensive income		1,646		—		1,646
Balance as of September 30, 2024	$	9,223	$	—	$	9,223

Derivative Instruments and Hedging Strategies - Schedule of Fair Value of Derivative Assets and Liabilities (Details) - Not Designated as Hedging Instrument - Forward Exchange Contract - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Derivative [Line Items]
Derivative Asset	$ 72	$ 608
Derivative Liability	$ 0	$ 0

- Definition

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 103
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-103

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 100
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-100

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-3

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478795/946-210-50-12

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478795/946-210-50-6

Reference 11: http://www.xbrl.org/2003/role/exampleRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 55
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477439/946-210-55-1

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478795/946-210-50-6

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478795/946-210-50-6

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)(4)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478795/946-210-50-6

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478795/946-210-50-1

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478795/946-210-50-1

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478795/946-210-50-1

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478795/946-210-50-1

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478795/946-210-50-6

Reference 20: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478795/946-210-50-6

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(3)(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 5C
-Subparagraph (SX 210.12-13C(Column H)(Footnote 7))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-5C

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(3)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 5
-Subparagraph (SX 210.12-13(Column A)(Footnote 3))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-5

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 5C
-Subparagraph (SX 210.12-13C(Column H))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-5C

Reference 26: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 5A
-Subparagraph (SX 210.12-13A(Column E))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-5A

Reference 27: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 5B
-Subparagraph (SX 210.12-13B(Column E))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-5B

Reference 28: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 5B
-Subparagraph (SX 210.12-13B(Column E)(Footnote 4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-5B

Reference 29: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483466/210-20-50-3

Reference 30: http://www.xbrl.org/2003/role/exampleRef
-Topic 210
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483444/210-20-55-22

Reference 31: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483444/210-20-55-10

Reference 32: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-10

+ Details

- Definition

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-3

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478795/946-210-50-6

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478795/946-210-50-6

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478795/946-210-50-6

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)(4)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478795/946-210-50-6

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478795/946-210-50-1

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478795/946-210-50-1

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478795/946-210-50-1

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478795/946-210-50-1

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478795/946-210-50-6

Reference 16: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478795/946-210-50-6

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(9)(e))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 5C
-Subparagraph (SX 210.12-13C(Column H)(Footnote 7))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-5C

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(9)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(9)(d))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 5
-Subparagraph (SX 210.12-13(Column G)(Footnote 8))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-5

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 5C
-Subparagraph (SX 210.12-13C(Column H))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-5C

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 5
-Subparagraph (SX 210.12-13(Column G))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-5

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 5A
-Subparagraph (SX 210.12-13A(Column E))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-5A

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 5B
-Subparagraph (SX 210.12-13B(Column E))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-5B

Reference 26: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 5B
-Subparagraph (SX 210.12-13B(Column E)(Footnote 4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-5B

Reference 27: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483466/210-20-50-3

Reference 28: http://www.xbrl.org/2003/role/exampleRef
-Topic 210
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483444/210-20-55-22

Reference 29: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483444/210-20-55-10

Reference 30: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-10

+ Details

Investments, at Equity, and Advances to 50% or Less Owned Companies - Schedule of Equity Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023
Schedule Of Investments [Line Items]
Investments at equity	$ 2,046	$ 4,125	$ 3,900
Seabulk Angola
Schedule Of Investments [Line Items]
Ownership percentage	49.00%
Investments at equity	$ 337	1,668
SEACOR Marine Arabia
Schedule Of Investments [Line Items]
Ownership percentage	45.00%
Investments at equity	$ 1,637	2,385
Other Offshore Marine Services Joint Ventures
Schedule Of Investments [Line Items]
Investments at equity	$ 72	$ 72
Other Offshore Marine Services Joint Ventures \| Minimum
Schedule Of Investments [Line Items]
Ownership percentage	20.00%
Other Offshore Marine Services Joint Ventures \| Maximum
Schedule Of Investments [Line Items]
Ownership percentage	50.00%		50.00%

- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References + Details

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14(Column A)(Footnote 1)(b)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-12(Column A)(Footnote 2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14(Column A)(Footnote 2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-12B(Column A)(Footnote 4)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-12(Column A))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-1

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-12(Column B))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-12(Column C))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-1

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-12(Column A)(Footnote 1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-12(Column A)(Footnote 2)(i))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-1

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-12(Column A)(Footnote 2)(ii))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-1

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-12(Column A)(Footnote 4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-1

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-12(Column C)(Footnote 5))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-1

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-12(Column C)(Footnote 6))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-1

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-12(Column B)(Footnote 7))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-1

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-12(Column C)(Footnote 8))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-1

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-12(Column C)(Footnote 8)(a)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-1

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-12(Column C)(Footnote 8)(a)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-1

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-12(Column C)(Footnote 8)(a)(3))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-1

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-12(Column C)(Footnote 8)(b)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-1

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-12(Column C)(Footnote 8)(b)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-1

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-12(Column C)(Footnote 8)(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-1

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-12(Column C)(Footnote 9))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-1

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-12(Column C)(Footnote 10))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-1

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-12B(Column A))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-12B(Column B))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3

Reference 26: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-12B(Column C))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3

Reference 27: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-12B(Column D))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3

Reference 28: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-12B(Column A)(Footnote 1)(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3

Reference 29: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-12B(Column A)(Footnote 1)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3

Reference 30: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-12B(Column C)(Footnote 2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3

Reference 31: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-12B(Column A)(Footnote 3))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3

Reference 32: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-12B(Column A)(Footnote 4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3

Reference 33: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-12B(Column A)(Footnote 4)(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3

Reference 34: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-12B(Column A)(Footnote 6))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3

Reference 35: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-12B(Column A)(Footnote 7))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3

Reference 36: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-12B(Column C)(Footnote 9))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3

Reference 37: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-12B(Column B)(Footnote 10))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3

Reference 38: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-12B(Column C)(Footnote 11))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3

Reference 39: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-12B(Column C)(Footnote 11)(a)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3

Reference 40: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-12B(Column C)(Footnote 11)(a)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3

Reference 41: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-12B(Column C)(Footnote 11)(a)(3))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3

Reference 42: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-12B(Column C)(Footnote 11)(b)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3

Reference 43: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-12B(Column C)(Footnote 11)(b)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3

Reference 44: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-12B(Column C)(Footnote 11)(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3

Reference 45: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-12B(Column C)(Footnote 12))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3

Reference 46: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-12B(Column C)(Footnote 13))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3

Reference 47: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14(Column A))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6

Reference 48: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14(Column B))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6

Reference 49: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14(Column F))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6

Reference 50: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14(Column A)(Footnote 1)(a)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6

Reference 51: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14(Column A)(Footnote 1)(a)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6

Reference 52: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14(Column A)(Footnote 1)(a)(3))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6

Reference 53: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14(Column A)(Footnote 1)(b)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6

Reference 54: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14(Column A)(Footnote 1)(b)(3))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6

Reference 55: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14(Column A)(Footnote 1)(b)(4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6

Reference 56: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14(Column A)(Footnote 1)(b)(5))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6

Reference 57: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14(Column A)(Footnote 1)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6

Reference 58: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14(Column A)(Footnote 3))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6

Reference 59: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14(Column F)(Footnote 4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6

Reference 60: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14(Column F)(Footnote 5)(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6

Reference 61: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14(Column F)(Footnote 7))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6

Reference 62: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14(Column F)(Footnote 8))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6

Reference 63: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14(Column F)(Footnote 9))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6

Reference 64: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 19
-Subparagraph (1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-19

Reference 65: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 19
-Subparagraph (3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-19

+ Details

Leases - Summary of Other Information Related to Leases (Details)	Sep. 30, 2024
Leases [Abstract]
Weighted average remaining lease term, in years - operating leases	11 years 8 months 12 days
Weighted average remaining lease term, in years - finance leases	1 year 2 months 12 days
Weighted average discount rate - operating leases	6.30%
Weighted average discount rate - finance leases	6.40%

Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2024

Fair Value Disclosures [Abstract]

Schedule of Fair Value of Assets and Liabilities Measured on Recurring Basis

The Company’s financial assets and liabilities as of September 30, 2024 and December 31, 2023 that are measured at fair value on a recurring basis were as follows (in thousands):


September 30, 2024	Level 1		Level 2		Level 3
ASSETS
Derivative instruments	$	—	$	72	$	—
December 31, 2023
ASSETS
Derivative instruments	$	—	$	608	$	—

Schedule of Estimated Fair Values of Financial Assets and Liabilities

The estimated fair values of the Company’s other financial assets and liabilities as of September 30, 2024 and December 31, 2023 were as follows (in thousands):


			Estimated Fair Value
September 30, 2024	Carrying Amount		Level 1		Level 2		Level 3
ASSETS
Cash, cash equivalents and restricted cash	$	37,864	$	37,864	$	—	$	—
LIABILITIES
Long-term debt, including current portion		300,930		—		297,861		—
December 31, 2023
ASSETS
Cash, cash equivalents and restricted cash	$	84,131	$	84,131	$	—	$	—
LIABILITIES
Long-term debt, including current portion		315,909		—		307,653		—

Long Term Debt

9 Months Ended

Sep. 30, 2024

Debt Disclosure [Abstract]

Long Term Debt

LONG-TERM DEBT

The Company’s long-term debt obligations as of September 30, 2024 and December 31, 2023 were as follows (in thousands):


	September 30, 2024			December 31, 2023
Guaranteed Notes	$	90,000		$	90,000
New Convertible Notes		35,000			35,000
2023 SMFH Credit Facility		109,800			118,950
Sea-Cat Crewzer III Term Loan Facility		11,752			14,227
SEACOR Delta Shipyard Financing		61,979			68,647
SEACOR Alpine Credit Facility		22,660			26,200
Total principal due for long-term debt		331,191			353,024
Current portion due within one year		(28,605	)		(28,365	)
Unamortized debt discount		(26,905	)		(32,885	)
Deferred financing costs		(3,356	)		(4,230	)
Long-term debt, less current portion	$	272,325		$	287,544

As of September 30, 2024, the Company was in compliance with all debt covenants and lender requirements.

Letters of Credit. As of September 30, 2024, the Company had outstanding letters of credit of $0.4 million securing lease obligations, labor and performance guaranties.

Basis of Presentation and Accounting Policies - Additional Information (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024 USD ($) $ / shares shares	Sep. 30, 2023 shares	Sep. 30, 2024 USD ($) $ / shares shares	Sep. 30, 2023 USD ($) Equipment shares	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Basis Of Presentation And Accounting Policies [Line Items]
Unearned revenue	$ 2,472,000		$ 2,472,000		$ 687,000	$ 2,333,000
Estimated useful life (Year)	20 years		20 years
Capitalized interest costs, including allowance for funds used during construction, total			$ 0	$ 0
Assets held for sale	$ 0		$ 0		500,000
Impairment, Long-Lived Asset, Held-for-Use, Statement of Income or Comprehensive Income [Extensible Enumeration]			Gains (Losses) on Asset Dispositions and Impairments, Net	Gains (Losses) on Asset Dispositions and Impairments, Net
Impairment of long-lived assets owned or leased in vessels			$ 0
Equity method investment, other than temporary impairment			$ 0	$ 0
Effective income tax rate reconciliation, percent, total			(0.50%)
Class of warrant or right, exercise price of warrants or rights \| $ / shares	$ 0.01		$ 0.01
Convertible Debt Securities
Basis Of Presentation And Accounting Policies [Line Items]
Antidilutive securities excluded from computation of loss per share, amount \| shares	2,978,724	2,978,724	2,978,724	2,978,724
Restricted Stock
Basis Of Presentation And Accounting Policies [Line Items]
Antidilutive securities excluded from computation of loss per share, amount \| shares	1,392,226	1,642,084	1,392,226	1,642,084
Employee Stock Option
Basis Of Presentation And Accounting Policies [Line Items]
Antidilutive securities excluded from computation of loss per share, amount \| shares	1,013,865	1,026,031	1,013,865	1,026,031
Anchor Handling Towing Supply Vessel
Basis Of Presentation And Accounting Policies [Line Items]
Impairment of long-lived assets owned or leased in vessels				$ 300,000	$ 700,000
Number of operating leases on equipment \| Equipment				1
Equity Investments in 50% or Less Owned Companies \| Minimum
Basis Of Presentation And Accounting Policies [Line Items]
Equity method investment, ownership percentage	20.00%		20.00%
Equity Investments in 50% or Less Owned Companies \| Maximum
Basis Of Presentation And Accounting Policies [Line Items]
Equity method investment, ownership percentage	50.00%	50.00%	50.00%	50.00%
Equity Investments in 50% or Less Owned Companies \| SEACOR Marine Foreign Holdings \| Minimum
Basis Of Presentation And Accounting Policies [Line Items]
Equity method investment, ownership percentage	50.00%		50.00%

Fair Value Measurements - Schedule of Estimated Fair Values of Financial Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Reported Value Measurement
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Cash, cash equivalents and restricted cash	$ 37,864	$ 84,131
Long-term debt, including current portion	300,930	315,909
Estimate of Fair Value Measurement \| Fair Value, Inputs, Level 1
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Cash, cash equivalents and restricted cash	37,864	84,131
Long-term debt, including current portion	0	0
Estimate of Fair Value Measurement \| Fair Value, Inputs, Level 2
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Cash, cash equivalents and restricted cash	0	0
Long-term debt, including current portion	297,861	307,653
Estimate of Fair Value Measurement \| Fair Value, Inputs, Level 3
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Cash, cash equivalents and restricted cash	0	0
Long-term debt, including current portion	$ 0	$ 0

Basis of Presentation and Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2024

Basis Of Presentation And Accounting Policies [Abstract]

Schedule of Deferred Revenues


	September 30, 2024			December 31, 2023
Balance at beginning of period	$	687		$	2,333
Unearned revenues during the period		5,859			6,501
Revenues recognized during the period		(4,074	)		(8,147	)
Balance at end of period	$	2,472		$	687

Schedule of Accumulated Other Comprehensive Income (Loss)

The components of accumulated other comprehensive income were as follows (in thousands):


	SEACOR Marine Holdings Inc. Stockholders’ Equity
	Foreign Currency Translation Adjustments		Derivative Gains (Losses) on Cash Flow Hedges, net		Total Other Comprehensive Income
December 31, 2023	$	7,577	$	—	$	7,577
Other comprehensive income		1,646		—		1,646
Balance as of September 30, 2024	$	9,223	$	—	$	9,223

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Trade receivables, allowance for credit loss	$ 4,687	$ 4,543
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	60,000,000	60,000,000
Common stock, shares issued (in shares)	28,442,188	27,665,792
Shares held in treasury (in shares)	796,926	418,014

Stock Based Compensation - Schedule of Equity Incentive Plan Transactions (Details)

9 Months Ended

Sep. 30, 2024

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Outstanding as of the beginning of year (in shares)

1,026,031

Granted (in shares)

Exercised (in shares)

(12,166)

Forfeited (in shares)

Outstanding as of the end of year (in shares)

1,013,865

Restricted Stock

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Outstanding as of the beginning of year (in shares)

1,642,084

Granted (in shares)

637,698

Vested (in shares)

(887,556)

^[1]

Forfeited (in shares)

Outstanding as of the end of year (in shares)

1,392,226

^[2]

[1]	Includes 157,455 vested grants of performance-based restricted stock units.
[2]	Includes 215,853 grants of performance-based restricted stock units that satisfied the performance obligation and are therefore likely to vest and excludes 326,597 grants of performance-based restricted stock units that are not considered outstanding until such time that they become probable to vest.

Unaudited Condensed Consolidated Statements of Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Income Statement [Abstract]
Operating Revenues	$ 68,916	$ 76,900	$ 201,553	$ 206,428
Costs and Expenses:
Operating	52,907	40,142	150,526	116,381
Administrative and general	11,019	12,300	33,825	37,636
Lease expense	364	651	1,331	2,069
Depreciation and amortization	12,928	13,462	38,749	40,799
Costs and expenses	77,218	66,555	224,431	196,885
Gains (Losses) on Asset Dispositions and Impairments, Net	1,821	(512)	1,857	3,352
Operating (Loss) Income	(6,481)	9,833	(21,021)	12,895
Other Income (Expense):
Interest income	358	340	1,396	1,222
Interest expense	(10,127)	(9,536)	(30,626)	(27,060)
Loss on debt extinguishment	0	(2,004)	0	(2,004)
Derivative gains (losses), net	67	0	(372)	0
Foreign currency (losses) gains, net	(1,717)	571	(2,357)	(857)
Other, net	29	0	(66)	0
Nonoperating income expense	(11,390)	(10,629)	(32,025)	(28,699)
Loss Before Income Tax (Benefit) Expense and Equity in Earnings of 50% or Less Owned Companies	(17,871)	(796)	(53,046)	(15,804)
Income Tax (Benefit) Expense	(513)	2,360	(270)	2,421
Loss Before Equity in Earnings of 50% or Less Owned Companies	(17,358)	(3,156)	(52,776)	(18,225)
Equity in Earnings of 50% or Less Owned Companies	1,012	2,273	878	3,182
Net Loss	$ (16,346)	$ (883)	$ (51,898)	$ (15,043)
Net Loss Per Share:
Basic	$ (0.59)	$ (0.03)	$ (1.88)	$ (0.56)
Diluted	$ (0.59)	$ (0.03)	$ (1.88)	$ (0.56)
Weighted Average Common Stock and Warrants Outstanding:
Basic	27,772,733	27,181,754	27,615,699	27,048,656
Diluted	27,772,733	27,181,754	27,615,699	27,048,656

Fair Value Measurements - Schedule of Fair Value of Assets and Liabilities Measured on Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Fair Value, Inputs, Level 1
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative Asset	$ 0	$ 0
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other Receivables Net Current	Other Receivables Net Current
Fair Value, Inputs, Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative Asset	$ 72	$ 608
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other Receivables Net Current	Other Receivables Net Current
Fair Value, Inputs, Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative Asset	$ 0	$ 0
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other Receivables Net Current	Other Receivables Net Current

- Definition

+ References

+ Details

Basis of Presentation and Accounting Policies - Schedule of Deferred Revenues (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Basis Of Presentation And Accounting Policies [Abstract]
Balance at beginning of period	$ 687	$ 2,333
Unearned revenues during the period	5,859	6,501
Revenues recognized during the period	(4,074)	(8,147)
Balance at end of period	$ 2,472	$ 687

Long Term Debt - Additional Information (Details) $ in Millions	Sep. 30, 2024 USD ($)
Debt Instrument [Line Items]
Letters of credit outstanding, amount	$ 0.4

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 55
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482949/835-30-55-8

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(f))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-3

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 5: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481568/470-20-55-69B

Reference 6: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69C
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481568/470-20-55-69C

Reference 7: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69E
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481568/470-20-55-69E

Reference 8: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69F
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481568/470-20-55-69F

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 11: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1D
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1D

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1D
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1D

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1D
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1D

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1E
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1E

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1E
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1E

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1E
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1E

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1F
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1F

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1F
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1F

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1F
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1F

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1F
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1F

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1I
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1I

Reference 26: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482925/835-30-45-2

Reference 27: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482900/835-30-50-1

+ Details

Commitments and Contingencies - Additional Information (Details) R$ in Thousands, £ in Millions, $ in Millions							9 Months Ended	12 Months Ended
	Jul. 05, 2024 GBP (£)	Jul. 05, 2024 USD ($)	Jun. 30, 2024 GBP (£)	Jun. 30, 2024 USD ($)	Nov. 23, 2023 GBP (£)	Nov. 23, 2023 USD ($)	Sep. 30, 2024 BRL (R$)	Dec. 31, 2023 GBP (£)	Dec. 31, 2023 USD ($)	Sep. 30, 2024 USD ($)
Commitments And Contingencies [Line Items]
Unrecorded unconditional purchase obligation, total										$ 12.5
Unrecorded unconditional purchase obligation, due in remainder of fiscal year										6.9
Unrecorded unconditional purchase obligation payable during 2025										5.6
Unrecorded unconditional purchase obligation due within four years										9.2
Deficiency Notice
Commitments And Contingencies [Line Items]
Cost allocation percentage							70.00%
Deficiency Notice \| Seabulk Overseas
Commitments And Contingencies [Line Items]
Cost allocation percentage							30.00%
Minimum \| Deficiency Notice
Commitments And Contingencies [Line Items]
Potential range of levies							R$ 25,200			3.5
Maximum \| Deficiency Notice
Commitments And Contingencies [Line Items]
Potential range of levies							R$ 12,870			$ 1.8
FSV Offshore Support Vessels
Commitments And Contingencies [Line Items]
Unrecorded unconditional purchase obligation, maximum quantity							1			1
Hybrid Battery Power Systems
Commitments And Contingencies [Line Items]
Unrecorded unconditional purchase obligation, total										$ 9.6
MNRPF
Commitments And Contingencies [Line Items]
Defined contribution plan, tri annual valuation	£ 0.3	$ 0.4			£ 1.2	$ 1.5
Defined contribution plan, payroll related operating expenses			£ 0.9	$ 1.2				£ 1.2	$ 1.5

Document and Entity Information - shares	9 Months Ended
Document and Entity Information - shares	Sep. 30, 2024	Oct. 25, 2024
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2024
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q3
Trading Symbol	SMHI
Entity Registrant Name	SEACOR Marine Holdings Inc.
Entity Central Index Key	0001690334
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		27,645,262
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity File Number	1-37966
Entity Tax Identification Number	47-2564547
Entity Address, Address Line One	12121 Wickchester Lane
Entity Address, Address Line Two	Suite 500
Entity Address, City or Town	Houston
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77079
City Area Code	346
Local Phone Number	980-1700
Entity Incorporation, State or Country Code	DE
Entity Interactive Data Current	Yes
Title of 12(b) Security	Common stock
Security Exchange Name	NYSE
Document Quarterly Report	true
Document Transition Report	false

Subsequent Events	9 Months Ended
Subsequent Events	Sep. 30, 2024
Subsequent Events [Abstract]
Subsequent Events	12. SUBSEQUENT EVENTS The Company has evaluated subsequent events through the filing of this Quarterly Report on Form 10-Q and determined that there have been no material events that have occurred that are not properly recognized and/or disclosed in the consolidated financial statements.

Fair Value Measurements

9 Months Ended

Sep. 30, 2024

Fair Value Disclosures [Abstract]

Fair Value Measurements

FAIR VALUE MEASUREMENTS

The fair value of an asset or liability is the price that would be received to sell an asset or transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The Company utilizes a fair value hierarchy that maximizes the use of observable inputs and minimizes the use of unobservable inputs when measuring fair value and defines three levels of inputs that may be used to measure fair value. Level 1 inputs are quoted prices in active markets for identical assets or liabilities. Level 2 inputs are observable inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly, including quoted prices for similar assets or liabilities in active markets, quoted prices in markets that are not active, inputs other than quoted prices that are observable for the asset or liability, or inputs derived from observable market data. Level 3 inputs are unobservable inputs that are supported by little or no market activity and are significant to the fair value of the assets or liabilities.

The Company’s financial assets and liabilities as of September 30, 2024 and December 31, 2023 that are measured at fair value on a recurring basis were as follows (in thousands):


September 30, 2024	Level 1		Level 2		Level 3
ASSETS
Derivative instruments	$	—	$	72	$	—
December 31, 2023
ASSETS
Derivative instruments	$	—	$	608	$	—

The fair value of the Company’s derivative instruments was estimated by utilizing a spot rate as of the measurement date provided by an independent third party.

The estimated fair values of the Company’s other financial assets and liabilities as of September 30, 2024 and December 31, 2023 were as follows (in thousands):


			Estimated Fair Value
September 30, 2024	Carrying Amount		Level 1		Level 2		Level 3
ASSETS
Cash, cash equivalents and restricted cash	$	37,864	$	37,864	$	—	$	—
LIABILITIES
Long-term debt, including current portion		300,930		—		297,861		—
December 31, 2023
ASSETS
Cash, cash equivalents and restricted cash	$	84,131	$	84,131	$	—	$	—
LIABILITIES
Long-term debt, including current portion		315,909		—		307,653		—

The carrying value of cash, cash equivalents, restricted cash and trade receivables approximates fair value. The fair value of the Company’s long-term debt was estimated based upon quoted market prices or by using discounted cash flow analysis based on estimated current rates for similar types of arrangements. Considerable judgment was required in developing certain of the estimates of fair value, and, accordingly, the estimates presented herein are not necessarily indicative of the amounts that the Company could realize in a current market exchange.

Property and equipment. During the nine months ended September 30, 2024, the Company recognized no impairment charges. During the year ended December 31, 2023, the Company recognized impairment charges totaling $0.7 million for one leased-in AHTS to adjust for indicative cash flows and the cost to return the vessel to its owner.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 107
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-107

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 100
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-100

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2E
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2E

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 940
-SubTopic 820
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478119/940-820-50-1

+ Details

Investments, at Equity, and Advances to 50% or Less Owned Companies (Tables)

9 Months Ended

Sep. 30, 2024

Schedule of Investments [Abstract]

Equity Method Investments

Investments, at equity, and advances to 50% or less owned companies as of September 30, 2024 and December 31, 2023 were as follows (in thousands):


	Ownership			September 30, 2024		December 31, 2023
Seabulk Angola		49.0	%	$	337	$	1,668
SEACOR Marine Arabia		45.0	%		1,637		2,385
Other	20.0% - 50.0%				72		72
				$	2,046	$	4,125

Segment Information - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Segment Information [Line Items]
Equity method investments	$ 2,046	$ 3,900	$ 2,046	$ 3,900	$ 4,125
Equity in (losses) earnings of 50% or less owned companies	$ 1,012	$ 2,273	$ 878	$ 3,182
Equity Investments in 50% or Less Owned Companies \| Maximum
Segment Information [Line Items]
Equity method investment, ownership percentage	50.00%	50.00%	50.00%	50.00%
Other Offshore Marine Services Joint Ventures
Segment Information [Line Items]
Equity method investments	$ 72		$ 72		$ 72
Other Offshore Marine Services Joint Ventures \| Maximum
Segment Information [Line Items]
Equity method investment, ownership percentage	50.00%	50.00%	50.00%	50.00%

- Definition

+ References + Details

- Definition

Amount of income (loss) for proportionate share of equity method investee's income (loss).

+ References + Details

Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash Flows from Operating Activities:
Net Loss	$ (51,898)	$ (15,043)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation and amortization	38,749	40,799
Deferred financing costs amortization	890	1,300
Stock-based compensation expense	4,836	4,490
Debt discount amortization	5,980	4,899
Allowance for credit losses	144	3,253
Gain from equipment sales, retirements or impairments	(1,857)	(3,352)
Loss on debt extinguishment	0	177
Derivative losses	372	0
Interest on finance leases	1	201
Settlement on derivative transactions, net	164	577
Currency losses	2,357	857
Deferred income taxes	(8,916)	(7,701)
Equity earnings	(878)	(3,182)
Dividends received from 50% or less owned companies	2,916	2,075
Changes in Operating Assets and Liabilities:
Accounts receivables	(10,049)	(13,743)
Other assets	(2,653)	1,555
Accounts payable and accrued liabilities	1,052	(6,732)
Net cash (used in) provided by operating activities	(18,790)	10,430
Cash Flows from Investing Activities:
Purchases of property and equipment	(4,284)	(6,960)
Proceeds from disposition of property and equipment	2,417	8,038
Principal payments on notes due from others	0	15,000
Net cash (used in) provided by investing activities	(1,867)	16,078
Cash Flows from Financing Activities:
Payments on long-term debt	(21,833)	(22,992)
Payments on debt extinguishment	0	(131,604)
Payments on debt extinguishment cost	0	(1,827)
Proceeds from issuance of long-term debt, net of issuance costs	0	148,388
Payments on finance leases	(28)	(522)
Proceeds from exercise of stock options	140	6
Tax withholdings on restricted stock vesting and director share awards	(3,889)	(2,368)
Net cash used in financing activities	(25,610)	(10,919)
Effects of Exchange Rate Changes on Cash, Restricted Cash and Cash Equivalents	0	2
Net Change in Cash, Restricted Cash and Cash Equivalents	(46,267)	15,591
Cash, Restricted Cash and Cash Equivalents, Beginning of Period	84,131	43,045
Cash, Restricted Cash and Cash Equivalents, End of Period	37,864	58,636
Supplemental disclosures:
Cash paid for interest, excluding capitalized interest	21,925	21,045
Income taxes paid, net	50	1,730
Noncash Investing and Financing Activities:
(Decrease) increase in capital expenditures in accounts payable and accrued liabilities	(1,100)	826
Recognition of a new right-of-use asset - operating leases	0	348
Recognition of a new right-of-use asset - financing leases	$ 7	$ 0

Fair Value Measurements - Additional Information (Details) - USD ($)	9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Impairment charges	$ 0
Impairment of long-lived assets owned or leased in vessels	$ 0
Anchor Handling Towing Supply
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Impairment of long-lived assets owned or leased in vessels		$ 300,000	$ 700,000

Derivative Instruments and Hedging Strategies - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Derivative [Line Items]
Derivative gains (loss) on cash flow hedges	$ 0	$ 3	$ 0	$ 56
Cash Flow Hedging
Derivative [Line Items]
Derivative gains (loss) on cash flow hedges				$ (500)
Fair Value Hedging \| Derivative Liabilities
Derivative [Line Items]
Recognized gain (loss) on hedged item in fair value hedge			$ (400)

Long Term Debt - Schedule of Long-term Debt Obligations (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 331,191	$ 353,024
Current portion due within one year	(28,605)	(28,365)
Unamortized debt discount	(26,905)	(32,885)
Deferred financing costs	(3,356)	(4,230)
Long-term debt, less current portion	272,325	287,544
Guaranteed Notes
Debt Instrument [Line Items]
Long-term Debt, Gross	90,000	90,000
New Convertible Notes
Debt Instrument [Line Items]
Long-term Debt, Gross	35,000	35,000
2023 SMFH Credit Facility
Debt Instrument [Line Items]
Long-term Debt, Gross	109,800	118,950
Sea-Cat Crewzer III Term Loan Facility
Debt Instrument [Line Items]
Long-term Debt, Gross	11,752	14,227
SEACOR Delta Shipyard Financing
Debt Instrument [Line Items]
Long-term Debt, Gross	61,979	68,647
SEACOR Alpine Credit Facility
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 22,660	$ 26,200

Basis of Presentation and Accounting Policies - Schedule of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	$ 337,938	$ 366,855	$ 374,224	$ 379,146
Other comprehensive income	1,774	(1,875)	1,646	(594)
Balance	325,008	365,637	325,008	365,637
Accumulated Foreign Currency Adjustment Attributable to Parent
Accumulated Other Comprehensive Income Loss [Line Items]
Balance			7,577
Other comprehensive income			1,646
Balance	9,223		9,223
Derivative Gains (Losses) on Cash Flow Hedges, net Attributable to Parent
Accumulated Other Comprehensive Income Loss [Line Items]
Balance			0
Other comprehensive income			0
Balance	0		0
AOCI Attributable to Parent
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	7,449	8,128	7,577	6,847
Other comprehensive income			1,646
Balance	$ 9,223	$ 6,253	$ 9,223	$ 6,253

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References + Details

- Definition

Amount before tax, after reclassification adjustments of other comprehensive income (loss).

+ References + Details

- Definition

Amount of equity (deficit) attributable to parent and noncontrolling interest. Excludes temporary equity.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-6

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 60
-Name Accounting Standards Codification
-Section 65
-Paragraph 1
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476176/805-60-65-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 60
-Name Accounting Standards Codification
-Section 65
-Paragraph 1
-Subparagraph (d)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476176/805-60-65-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 323
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478666/740-323-65-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 323
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (g)(4)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478666/740-323-65-2

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 323
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (d)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478666/740-323-65-2

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 323
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (d)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478666/740-323-65-2

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 848
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (a)(3)(iii)(03)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483550/848-10-65-2

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 8
-Subparagraph (c)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479832/842-10-65-8

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 24
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483421/250-10-45-24

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 23
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483421/250-10-45-23

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483421/250-10-45-5

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 5
-Subparagraph (c)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479654/326-10-65-5

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 20
-Name Accounting Standards Codification
-Section 65
-Paragraph 6
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480528/815-20-65-6

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 20
-Name Accounting Standards Codification
-Section 65
-Paragraph 6
-Subparagraph (h)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480528/815-20-65-6

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 20
-Name Accounting Standards Codification
-Section 65
-Paragraph 6
-Subparagraph (h)(1)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480528/815-20-65-6

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 20
-Name Accounting Standards Codification
-Section 65
-Paragraph 6
-Subparagraph (h)(1)(iii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480528/815-20-65-6

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 20
-Name Accounting Standards Codification
-Section 65
-Paragraph 6
-Subparagraph (h)(1)(iv)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480528/815-20-65-6

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 20
-Name Accounting Standards Codification
-Section 65
-Paragraph 6
-Subparagraph (i)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480528/815-20-65-6

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 105
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 6
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479343/105-10-65-6

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 105
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 6
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479343/105-10-65-6

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (f)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480016/944-40-65-2

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (f)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480016/944-40-65-2

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 8
-Subparagraph (d)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482615/740-10-65-8

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 8
-Subparagraph (d)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482615/740-10-65-8

Reference 26: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 4
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479654/326-10-65-4

Reference 27: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-1

Reference 28: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 1
-Subparagraph (e)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480175/815-40-65-1

Reference 29: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-7

Reference 30: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482765/220-10-50-5

Reference 31: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481674/830-30-50-1

Reference 32: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481694/830-30-45-17

Reference 33: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 20
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481694/830-30-45-20

Reference 34: http://www.xbrl.org/2003/role/exampleRef
-Topic 946
-SubTopic 830
-Name Accounting Standards Codification
-Section 55
-Paragraph 11
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479168/946-830-55-11

Reference 35: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 205
-Name Accounting Standards Codification
-Section 45
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478009/946-205-45-3

Reference 36: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478448/946-505-50-3

Reference 37: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(19))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

Reference 38: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.6-05(4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-2

Reference 39: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-09(4)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-3

Reference 40: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-09(6))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-3

Reference 41: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-09(7))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-3

Reference 42: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1

Reference 43: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 44: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481687/323-10-50-3

Reference 45: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-28

Reference 46: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 15
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481231/810-10-45-15

Reference 47: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 16
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481231/810-10-45-16

Reference 48: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 55
-Paragraph 4I
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481175/810-10-55-4I

Reference 49: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 60
-Name Accounting Standards Codification
-Section 65
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476166/350-60-65-1

+ Details

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Current Assets:
Cash and cash equivalents	$ 35,601	$ 67,455
Restricted cash	2,263	16,676
Receivables:
Trade, net of allowance for credit loss of $4,687 and $4,543 as of September 30, 2024 and December 31, 2023, respectively	76,497	63,728
Other	7,841	11,049
Tax receivable	983	983
Inventories	3,139	1,609
Prepaid expenses and other	4,840	2,686
Assets held for sale	0	500
Total current assets	131,164	164,686
Property and Equipment:
Historical cost	921,445	918,823
Accumulated depreciation	(362,604)	(324,141)
Property and equipment	558,841	594,682
Construction in progress	11,935	10,362
Net property and equipment	570,776	605,044
Right-of-use asset - operating leases	3,575	4,291
Right-of-use asset - finance leases	19	37
Investments, at equity, and advances to 50% or less owned companies	2,046	4,125
Other assets	1,864	2,153
Total assets	709,444	780,336
Current Liabilities:
Current portion of operating lease liabilities	494	1,591
Current portion of finance lease liabilities	17	35
Current portion of long-term debt	28,605	28,365
Accounts payable	22,744	27,562
Accrued wages and benefits	5,179	5,083
Accrued interest	3,681	1,850
Unearned revenue	2,472	687
Accrued capital, repair, and maintenance expenditures	8,474	2,471
Accrued insurance deductibles and premiums	3,079	3,189
Other current liabilities	5,923	6,253
Total current liabilities	80,668	77,086
Long-term operating lease liabilities	3,221	3,529
Long-term finance lease liabilities	4	6
Long-term debt	272,325	287,544
Deferred income taxes	26,802	35,718
Deferred gains and other liabilities	1,416	2,229
Total liabilities	384,436	406,112
SEACOR Marine Holdings Inc. stockholders’ equity:
Common stock, $.01 par value, 60,000,000 shares authorized; 28,442,188 and 27,665,792 shares issued as of September 30, 2024 and December 31, 2023, respectively	287	280
Additional paid-in capital	477,661	472,692
Accumulated deficit	(154,374)	(102,425)
Shares held in treasury of 796,926 and 418,014 as of September 30, 2024 and December 31, 2023, respectively, at cost	(8,110)	(4,221)
Accumulated other comprehensive income, net of tax	9,223	7,577
Total stockholders equity	324,687	373,903
Noncontrolling interests in subsidiaries	321	321
Total equity	325,008	374,224
Total liabilities and equity	$ 709,444	$ 780,336

Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details)	9 Months Ended
	Sep. 30, 2024
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory rate	(21.00%)
Income (loss) of foreign subsidiaries not includable in U.S. return and foreign withholding tax	18.20%
162(m) - Executive compensation	2.60%
Other	(0.30%)
Effective income tax rate	(0.50%)

Leases - Additional Information (Details) - Other Equipment	Sep. 30, 2024
Minimum
Lessee Lease Description [Line Items]
Operating lease, lease terms (in duration)	9 months
Maximum
Lessee Lease Description [Line Items]
Operating lease, lease terms (in duration)	267 months

Derivative Instruments and Hedging Strategies - Schedule of Gains (Losses) on Derivative Instruments not Designated as Hedging Instruments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Forward Currency Exchange, Option, and Future Contracts
Derivative [Line Items]
Gains on derivative instruments	$ 67	$ 0	$ (372)	$ 0

Leases

9 Months Ended

Sep. 30, 2024

Leases [Abstract]

Leases

LEASES

As of September 30, 2024, the Company leased-in certain facilities and other equipment. The leases typically contain purchase and renewal options or rights of first refusal with respect to the sale or lease of the equipment. The lease terms of certain facilities and other equipment had a duration ranging from nine to 267 months.

As of September 30, 2024, future minimum payments for leases for the remainder of 2024 and the years ended December 31, noted below, were as follows (in thousands):


	Operating Leases			Finance Leases
Remainder of 2024	$	183		$	10
2025		806			9
2026		474			3
2027		400			1
2028		341			—
Years subsequent to 2028		2,872			—
		5,076			23
Interest component		(1,361	)		(2	)
		3,715			21
Current portion of long-term lease liabilities		494			17
Long-term lease liabilities	$	3,221		$	4

For the three and nine months ended September 30, 2024 and 2023 the components of lease expense were as follows (in thousands):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2024		2023		2024		2023
Operating lease costs	$	218	$	551	$	1,009	$	1,661
Finance lease costs:
Amortization of finance lease assets (1)		12		135		32		456
Interest on finance lease liabilities (2)		—		58		1		200
Short-term lease costs		146		100		322		408
	$	376	$	844	$	1,364	$	2,725

(1)

Included in amortization costs in the consolidated statements of income (loss).

(2)

Included in interest expense in the consolidated statements of income (loss).

For the nine months ended September 30, 2024 supplemental cash flow information related to leases was as follows (in thousands):


	2024
Operating cash outflows from operating leases	$	1,658
Financing cash outflows from finance leases		28
Right-of-use assets obtained for operating lease liabilities		—
Right-of-use assets obtained for finance lease liabilities		7

For the nine months ended September 30, 2024 other information related to leases was as follows:


	2024
Weighted average remaining lease term, in years - operating leases		11.7
Weighted average remaining lease term, in years - finance leases		1.2
Weighted average discount rate - operating leases		6.3	%
Weighted average discount rate - finance leases		6.4	%

Stock Based Compensation - Schedule of Equity Incentive Plan Transactions (Details) (Parenthetical) - Performance Stock [Member]	9 Months Ended
	Sep. 30, 2024 shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares vested	157,455
Number of shares likely to vest	215,853
Number of shares outstanding	326,597

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

Income Taxes (Tables)

9 Months Ended

Sep. 30, 2024

Income Tax Disclosure [Abstract]

Schedule of Effective Income Tax Rate Reconciliation

The following table reconciles the difference between the statutory federal income tax rate for the Company and the effective income tax rate for the nine months ended September 30, 2024:


Statutory rate	(21.0	)%
Income (loss) of foreign subsidiaries not includable in U.S. return and foreign withholding tax	18.2	%
162(m) - Executive compensation	2.6	%
Other	(0.3	)%
Effective income tax rate	(0.5	)%

Leases - Summary of Future Minimum Payments For Leases (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Operating Leases
Remainder of 2024	$ 183
2025	806
2026	474
2027	400
2028	341
Years subsequent to 2028	2,872
Operating lease payments due	5,076
Interest component	(1,361)
Total operating leases	3,715
Current portion of operating lease liabilities	494	$ 1,591
Long-term operating lease liabilities	3,221	3,529
Finance Leases
Remainder of 2024	10
2025	9
2026	3
2027	1
2028	0
Years subsequent to 2028	0
Total finance leases	23
Interest component	(2)
Finance Leases	21
Current portion of finance lease liabilities	17	35
Long-term finance lease liabilities	$ 4	$ 6

Leases - Summary of Components of Leases Expense (Details) - USD ($)
$ in Thousands

3 Months Ended

9 Months Ended

Sep. 30, 2024

Sep. 30, 2023

Sep. 30, 2024

Sep. 30, 2023

Leases [Abstract]

Operating lease costs

$ 218

$ 551

$ 1,009

$ 1,661

Finance lease costs:

Amortization of finance lease assets

^[1]

135

456

Interest on lease liabilities

^[2]

200

Short-term lease costs

146

100

322

408

Total lease expense

$ 376

$ 844

$ 1,364

$ 2,725

[1]	Included in amortization costs in the consolidated statements of income (loss)
[2]	Included in interest expense in the consolidated statements of income (loss)

Insider Trading Arrangements - Directors or Section 16 Officers	3 Months Ended
	Sep. 30, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Leases (Tables)

9 Months Ended

Sep. 30, 2024

Leases [Abstract]

Summary of Future Minimum Payments for Leases

As of September 30, 2024, future minimum payments for leases for the remainder of 2024 and the years ended December 31, noted below, were as follows (in thousands):


	Operating Leases			Finance Leases
Remainder of 2024	$	183		$	10
2025		806			9
2026		474			3
2027		400			1
2028		341			—
Years subsequent to 2028		2,872			—
		5,076			23
Interest component		(1,361	)		(2	)
		3,715			21
Current portion of long-term lease liabilities		494			17
Long-term lease liabilities	$	3,221		$	4

Summary of Components of Leases Expense

For the three and nine months ended September 30, 2024 and 2023 the components of lease expense were as follows (in thousands):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2024		2023		2024		2023
Operating lease costs	$	218	$	551	$	1,009	$	1,661
Finance lease costs:
Amortization of finance lease assets (1)		12		135		32		456
Interest on finance lease liabilities (2)		—		58		1		200
Short-term lease costs		146		100		322		408
	$	376	$	844	$	1,364	$	2,725

(1)

Included in amortization costs in the consolidated statements of income (loss).

(2)

Included in interest expense in the consolidated statements of income (loss).

Summary of Supplemental Cash Flow Information Related to Leases

For the nine months ended September 30, 2024 supplemental cash flow information related to leases was as follows (in thousands):


	2024
Operating cash outflows from operating leases	$	1,658
Financing cash outflows from finance leases		28
Right-of-use assets obtained for operating lease liabilities		—
Right-of-use assets obtained for finance lease liabilities		7

Summary of Other Information Related to Leases

For the nine months ended September 30, 2024 other information related to leases was as follows:


	2024
Weighted average remaining lease term, in years - operating leases		11.7
Weighted average remaining lease term, in years - finance leases		1.2
Weighted average discount rate - operating leases		6.3	%
Weighted average discount rate - finance leases		6.4	%

Segment Information

9 Months Ended

Sep. 30, 2024

Segment Reporting [Abstract]

Segment Information

11.

SEGMENT INFORMATION

The Company’s segment presentation and basis of measurement of segment profit or loss are as previously described in the 2023 Annual Report. The following tables summarize the operating results, capital expenditures and assets of the Company’s reportable segments for the periods indicated (in thousands):


	United States (primarily Gulf of Mexico)			Africa and Europe		Middle East and Asia		Latin America		Total
For the Three Months Ended September 30, 2024
Operating Revenues:
Time charter	$	6,593		$	28,809	$	16,411	$	11,500	$	63,313
Bareboat charter		—			—		—		372		372
Other marine services		1,188			3,048		375		620		5,231
		7,781			31,857		16,786		12,492		68,916
Direct Costs and Expenses:
Operating:
Personnel		6,297			6,083		5,769		3,791		21,940
Repairs and maintenance		1,655			3,455		3,318		1,517		9,945
Drydocking		2,615			681		832		1,940		6,068
Insurance and loss reserves		799			599		927		259		2,584
Fuel, lubes and supplies		964			2,514		1,043		2,053		6,574
Other		225			3,975		1,131		465		5,796
		12,555			17,307		13,020		10,025		52,907
Direct Vessel (Loss) Profit	$	(4,774	)	$	14,550	$	3,766	$	2,467		16,009
Other Costs and Expenses:
Lease expense	$	140		$	75	$	73	$	76		364
Administrative and general											11,019
Depreciation and amortization		3,194			4,540		3,261		1,933		12,928
											24,311
Gains on asset dispositions and impairments, net											1,821
Operating loss										$	(6,481	)


	United States (primarily Gulf of Mexico)			Africa and Europe			Middle East and Asia			Latin America			Total
For the Nine Months Ended September 30, 2024
Operating Revenues:
Time charter	$	21,247		$	76,411		$	50,961		$	39,606		$	188,225
Bareboat charter		—			—			—			1,100			1,100
Other marine services		2,694			4,245			1,344			3,945			12,228
		23,941			80,656			52,305			44,651			201,553
Direct Costs and Expenses:
Operating:
Personnel		18,362			16,233			18,662			11,919			65,176
Repairs and maintenance		4,938			9,825			9,473			5,716			29,952
Drydocking		7,153			3,939			3,022			4,870			18,984
Insurance and loss reserves		2,138			1,752			2,343			1,188			7,421
Fuel, lubes and supplies		2,497			4,971			3,344			4,251			15,063
Other		280			8,975			3,120			1,555			13,930
		35,368			45,695			39,964			29,499			150,526
Direct Vessel (Loss) Profit	$	(11,427	)	$	34,961		$	12,341		$	15,152			51,027
Other Costs and Expenses:
Lease expense	$	419		$	425		$	229		$	258			1,331
Administrative and general														33,825
Depreciation and amortization		9,138			13,020			10,004			6,587			38,749
														73,905
Gains on asset dispositions and impairments, net														1,857
Operating loss													$	(21,021	)
As of September 30, 2024
Property and Equipment:
Historical Cost	$	198,688		$	332,880		$	250,456		$	139,421		$	921,445
Accumulated Depreciation		(103,139	)		(119,953	)		(97,997	)		(41,515	)		(362,604	)
	$	95,549		$	212,927		$	152,459		$	97,906		$	558,841
Total Assets (1)	$	119,579		$	260,352		$	175,236		$	118,301		$	673,468

(1)

Total Assets by region does not include corporate assets of $36.0 million as of September 30, 2024.


	United States (primarily Gulf of Mexico)		Africa and Europe		Middle East and Asia		Latin America			Total
For the Three Months Ended September 30, 2023
Operating Revenues:
Time charter	$	16,236	$	22,528	$	16,087	$	13,817		$	68,668
Bareboat charter		—		—		—		368			368
Other marine services		5,478		1,943		267		176			7,864
		21,714		24,471		16,354		14,361			76,900
Direct Costs and Expenses:
Operating:
Personnel		6,712		5,089		5,157		2,985			19,943
Repairs and maintenance		1,560		2,214		2,623		1,021			7,418
Drydocking		462		320		1,056		(70	)		1,768
Insurance and loss reserves		332		573		711		217			1,833
Fuel, lubes and supplies		958		2,573		743		773			5,047
Other		375		2,448		943		367			4,133
		10,399		13,217		11,233		5,293			40,142
Direct Vessel Profit	$	11,315	$	11,254	$	5,121	$	9,068			36,758
Other Costs and Expenses:
Lease expense	$	116	$	372	$	59	$	104			651
Administrative and general											12,300
Depreciation and amortization		3,810		3,821		3,721		2,110			13,462
											26,413
Losses on asset dispositions and impairments, net											(512	)
Operating income										$	9,833


	United States (primarily Gulf of Mexico)			Africa and Europe			Middle East and Asia			Latin America			Total
For the Nine Months Ended September 30, 2023
Operating Revenues:
Time charter	$	28,921		$	65,938		$	48,678		$	41,350		$	184,887
Bareboat charter		—			—			—			1,092			1,092
Other marine services		12,332			2,393			3,806			1,918			20,449
		41,253			68,331			52,484			44,360			206,428
Direct Costs and Expenses:
Operating:
Personnel		19,204			14,427			15,264			10,795			59,690
Repairs and maintenance		4,327			6,817			4,519			3,559			19,222
Drydocking		2,011			1,648			(723	)		1,101			4,037
Insurance and loss reserves		2,455			1,311			2,616			630			7,012
Fuel, lubes and supplies		2,665			6,207			2,310			2,322			13,504
Other		952			7,805			2,828			1,331			12,916
		31,614			38,215			26,814			19,738			116,381
Direct Vessel Profit	$	9,639		$	30,116		$	25,670		$	24,622			90,047
Other Costs and Expenses:
Lease expense	$	395		$	1,209		$	202		$	263			2,069
Administrative and general														37,636
Depreciation and amortization		11,206			11,599			11,117			6,877			40,799
														80,504
Gains on asset dispositions and impairments, net														3,352
Operating income													$	12,895
As of September 30, 2023
Property and Equipment:
Historical Cost	$	215,592		$	272,312		$	285,721		$	162,895		$	936,520
Accumulated Depreciation		(96,597	)		(89,338	)		(98,481	)		(34,133	)		(318,549	)
	$	118,995		$	182,974		$	187,240		$	128,762		$	617,971
Total Assets (1)	$	155,613		$	212,048		$	210,401		$	147,479		$	725,541

(1)

Total Assets by region does not include corporate assets of $54.8 million as of September 30, 2023.

The Company’s investments in 50% or less owned companies, which are accounted for under the equity method, also contribute to its consolidated results of operations. As of September 30, 2024, and 2023, the Company’s investments, at equity and advances to 50% or less owned companies were $2.0 million and $3.9 million, respectively. Equity in earnings of 50% or less owned companies for the nine months ended September 30, 2024 and 2023 were $0.9 million and $3.2 million, respectively.

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 48
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-48

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 270
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482964/270-10-50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (ee)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 5: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 6: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 54
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-54

Reference 7: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 47
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-47

Reference 8: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 54
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-54

Reference 9: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 47
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-47

Reference 10: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 54
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-54

Reference 11: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 47
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-47

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-22

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 31
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-31

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 34
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-34

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 26C
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-26C

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 26B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-26B

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-15

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-42

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 40
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-40

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/280/tableOfContent

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 26
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-26

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 41
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-41

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 21
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-21

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 21
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-21

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

+ Details

Stock Based Compensation (Tables)

9 Months Ended

Sep. 30, 2024

Share-Based Payment Arrangement [Abstract]

Schedule of Equity Incentive Plan Transactions

Transactions in connection with the Company’s Equity Incentive Plans during the nine months ended September 30, 2024 were as follows:


Restricted Stock Activity:
Outstanding as of December 31, 2023	1,642,084
Granted	637,698
Vested (1)	(887,556	)
Forfeited	—
Outstanding as of September 30, 2024 (2)	1,392,226

Stock Option Activity:
Outstanding as of December 31, 2023	1,026,031
Granted	—
Exercised	(12,166	)
Forfeited	—
Outstanding as of September 30, 2024	1,013,865

(1)

Includes 157,455 vested grants of performance-based restricted stock units.

(2)

Unaudited Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Net Loss	$ (16,346)	$ (883)	$ (51,898)	$ (15,043)
Other Comprehensive Income (Loss):
Foreign currency translation gains (losses)	1,774	(1,679)	1,646	(79)
Derivative gains on cash flow hedges	0	3	0	56
Other comprehensive (loss) income	1,774	(1,875)	1,646	(594)
Income Tax Expense	0	0	0	0
Other comprehensive (loss) income, net	1,774	(1,875)	1,646	(594)
Comprehensive Loss	(14,572)	(2,758)	(50,252)	(15,637)
Interest Expense
Other Comprehensive Income (Loss):
Reclassification of derivative gains on cash flow hedges to interest expense	$ 0	$ (199)	$ 0	$ (571)

Equipment Acquisitions and Dispositions	9 Months Ended
Equipment Acquisitions and Dispositions	Sep. 30, 2024
Property, Plant and Equipment [Abstract]
Equipment Acquisitions and Dispositions	2. EQUIPMENT ACQUISITIONS AND DISPOSITIONS During the nine months ended September 30, 2024, capital expenditures were $4.3 million and there were no equipment deliveries. During the nine months ended September 30, 2024, the Company sold one AHTS, previously classified as held for sale, and other equipment for net cash proceeds of $2.4 million, after transaction costs, and a gain of $1.9 million. During the nine months ended September 30, 2023, the Company sold three liftboats, one specialty vessel, previously removed from service, and other equipment, previously classified as held for sale, as well as other equipment not previously classified as such, for net cash proceeds of $8.0 million, after transaction costs, and a gain of $2.7 million.

Commitments and Contingencies

9 Months Ended

Sep. 30, 2024

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

COMMITMENTS AND CONTINGENCIES

As of September 30, 2024, the Company had unfunded capital commitments of $12.5 million for miscellaneous vessel equipment, including $9.6 million in respect of hybrid battery power systems. Of the unfunded capital commitments, $6.9 million is payable during the remainder of 2024 and $5.6 million is payable during 2025. The Company has indefinitely deferred an additional $9.2 million of orders with respect to one fast support vessel.

In December 2015, the Brazilian Federal Revenue Office issued a tax-deficiency notice to Seabulk Offshore do Brasil Ltda, an indirect wholly-owned subsidiary of SEACOR Marine (“Seabulk Offshore do Brasil”), with respect to certain profit participation contributions (also known as “PIS”) and social security financing contributions (also known as “COFINS”) requirements alleged to be due from Seabulk Offshore do Brasil (“Deficiency Notice”) in respect of the period of January 2011 until December 2012. In January 2016, the Company administratively appealed the Deficiency Notice on the basis that, among other arguments, (i) such contributions were not applicable in the circumstances of a 70%/30% cost allocation structure, and (ii) the tax

inspector had incorrectly determined that values received from outside of Brazil could not be classified as expense refunds. The initial appeal was dismissed by the Brazilian Federal Revenue Office and the Company appealed such dismissal and is currently awaiting an administrative trial. A local Brazilian law has been enacted that supports the Company’s position that such contribution requirements are not applicable, but it is uncertain whether such law will be taken into consideration with respect to administrative proceedings commenced prior to the enactment of the law. Accordingly, the success of Seabulk Offshore do Brasil in the administrative proceedings cannot be assured and the matter may need to be addressed through judicial court proceedings. The potential levy arising from the Deficiency Notice is R$25.2 million based on a historical potential levy of R$12.87 million (USD $3.5 million and USD $1.8 million, respectively, based on the exchange rate as of September 30, 2024).

In the normal course of its business, the Company becomes involved in various other litigation matters including, among others, claims by third parties for alleged property damages and personal injuries. Management has used estimates in determining the Company’s potential exposure to these matters and has recorded reserves in its financial statements related thereto where appropriate. It is possible that a change in the Company’s estimates of that exposure could occur, but the Company does not expect that such changes in estimated costs would have a material effect on the Company’s consolidated financial position, results of operations or cash flows.

Certain of the Company’s subsidiaries are participating employers in two industry-wide, multi-employer, defined benefit pension funds in the United Kingdom: the U.K Merchant Navy Officers Pension Fund (“MNOPF”) and the U.K. Merchant Navy Ratings Pension Fund (“MNRPF”). The Company’s participation in the MNOPF began with the acquisition of the Stirling group of companies (the “Stirling Group”) in 2001 and relates to certain officers employed between 1978 and 2002 by the Stirling Group and/or its predecessors. The Company’s participation in the MNRPF also began with the acquisition of the Stirling Group in 2001 and relates to ratings employed by the Stirling Group and/or its predecessors through today. Both of these plans are in deficit positions and, depending upon the results of future actuarial valuations, it is possible that the plans could experience funding deficits that will require the Company to recognize payroll related operating expenses in the periods invoices are received.

On October 19, 2021, the Company was informed by the MNRPF that two issues had been identified during a review of the MNRPF by the applicable trustee that would potentially give rise to material additional liabilities for the MNRPF. On November 23, 2023, the trustee advised that following the tri-annual valuation, $1.5 million (£1.2 million) of the potential cumulative funding deficit of the MNRPF was allocated to the Company as a participating employer, including the additional liabilities mentioned above. During 2023, the Company recognized payroll related operating expenses of $1.5 million (£1.2 million) for its allocated share of the potential cumulative funding deficit, which the Company anticipated being invoiced for during 2024 and 2025. On April 30, 2024, the Company was informed by the MNRPF that the Company’s allocated share of the potential cumulative funding deficit may be reduced due to changes in valuation assumptions, and on July 5, 2024, the Company was informed by the MNRPF that the Company’s final deficit share amount was $0.4 million (£0.3 million). As of June 30, 2024, the Company recognized a reduction in the payroll related operating expenses of $1.2 million (£0.9 million) to reflect the decreased deficit share amount. All invoices were settled in full in October 2024.

Investments, at Equity, and Advances to 50% or Less Owned Companies

9 Months Ended

Sep. 30, 2024

Schedule of Investments [Abstract]

Investments, at Equity, and Advances to 50% or Less Owned Companies

INVESTMENTS, AT EQUITY AND ADVANCES TO 50% OR LESS OWNED COMPANIES

Investments, at equity, and advances to 50% or less owned companies as of September 30, 2024 and December 31, 2023 were as follows (in thousands):


	Ownership			September 30, 2024		December 31, 2023
Seabulk Angola		49.0	%	$	337	$	1,668
SEACOR Marine Arabia		45.0	%		1,637		2,385
Other	20.0% - 50.0%				72		72
				$	2,046	$	4,125