April 22, 2019

John Gellert
Chief Executive Officer
SEACOR Marine Holdings Inc.
12121 Wickchester Lane, Suite 500
Houston, Texas 77079

       Re: SEACOR Marine Holdings Inc.
           Registration Statement on Form S-3
           Filed April 1, 2019
           File No. 333-230667

Dear Mr. Gellert:

       We have limited our review of your registration statement to those
issues we have
addressed in our comments. In some of our comments, we may ask you to provide
us with
information so we may better understand your disclosure.

       Please respond to this letter by amending your registration statement
and providing the
requested information. If you do not believe our comments apply to your facts
circumstances or do not believe an amendment is appropriate, please tell us why
in your

       After reviewing any amendment to your registration statement and the
information you
provide in response to these comments, we may have additional comments.

Form S-3 filed April 1, 2019

Documents Incorporated by Reference, page 13

1.     We note that your registration statement incorporates by reference your
Form 10-K for the
       fiscal year ended December 31, 2018, which in turn incorporates by
reference Part III
       from a proxy statement that you have not yet filed. Please be advised
that we cannot
       accelerate the effective date of your registration statement until you
have amended your
       Form 10-K to include Part III information or filed the definitive proxy
statement. For
       guidance, please refer to Compliance and Disclosure Interpretations,
Securities Act Forms
       Questions 123.01.
        We remind you that the company and its management are responsible for
the accuracy
and adequacy of their disclosures, notwithstanding any review, comments, action
or absence of
action by the staff.
 John Gellert
SEACOR Marine Holdings Inc.
April 22, 2019
Page 2

       Refer to Rules 460 and 461 regarding requests for acceleration. Please
allow adequate
time for us to review any amendment prior to the requested effective date of
the registration

       Please contact Susan Block at 202-551-3210 or Nolan McWilliams at
202-551-3217 with
any other questions.

FirstName LastNameJohn Gellert                             Sincerely,
Comapany NameSEACOR Marine Holdings Inc.
                                                           Division of
Corporation Finance
April 22, 2019 Page 2                                      Office of
Transportation and Leisure
FirstName LastName