April 13, 2005
Zip+4 Code:  20549-0305

Via Fax & U.S. Mail

Mr. Todd M. Hornbeck
President and Chief Executive Officer
103 Northpark Boulevard, Suite 300
Covington, Louisiana 70433

RE:	Hornbeck Offshore Services, Inc. (the "Company")
	Form 10-K for the year ended December 31, 2004
	File No. 333-69826

Dear Mr. Hornbeck:

Based upon an examination restricted solely to considerations of
the
Financial Statements, Management`s Discussion and Analysis, and
Selected Financial Data, the staff has the following comments on
the
above-referenced document.  We think you should revise all future
filings in response to these comments.  If you disagree, we will
consider your explanation as to why our comment is inapplicable or
a
revision is unnecessary.  Please be as detailed as necessary in
your
response.  In some of our comments, we may ask you to provide us
with
supplemental information so we may better understand your
disclosure.
After reviewing this information, we may or may not raise
additional
comments.

Please understand that the purpose of our review process is to
assist
you in your compliance with the applicable disclosure requirements
and
to enhance the overall disclosure in your filing.  We look forward
to
working with you in these respects.  We welcome any questions you
may
have about our comments or on any other aspect of our review.
Feel
free to call us at the telephone numbers listed at the end of this
letter.


Item 6 - Selected Financial Data

Reconciliation of EBITDA to Net Income - page 28 and Form 8-K,
dated
February 28, 2005

1. We have reviewed your disclosures regarding the presentation of
EBITDA and are not persuaded that you have appropriately justified
the
use of non-GAAP financial measures in the evaluation of your
performance. For example, you state that EBITDA facilitates
company to
company operating performance comparisons by backing out potential
differences caused by variations in capital structures (affecting
interest expense), taxation, and the method by which assets were
acquired. Please supplementally tell us how elimination of your
depreciation expense allows for useful comparison of your results
to
competitors that acquire their operating assets through the use of
operating leases, for which their lease costs would not be
eliminated
in the presentation of EBITDA. Please also tell us how elimination
of
your regulatory drydocking amortization allows for useful
comparison
to competitors who expense such costs as incurred. In addition,
please
supplementally tell us why EBITDA is more useful to investors than
operating income (loss), which provides your operating results
prior
to the effect of interest and taxation. We note that your
presentation
of EBITDA improperly excludes interest income. See Item
10(e)(1)(i)(
C) of Regulation S-K and Item 2.02 of Form 8-K for guidance.

Management`s Discussion and Analysis

Contractual Obligations - page 44

2. As this table is intended to increase the transparency of cash
flow, we believe that registrants should generally include
scheduled
interest payments in the table.  Where interest rates are variable
and
unknown, you may use your judgment to determine whether or not to
include such estimates.  If you elect to include them, you may
determine the appropriate methodology to estimate the interest
payments.  Regardless of whether you include interest payments or
not,
a footnote to the table should clarify whether or not you have
done so
and, if applicable, the methodology you have used in your
estimate.
If interest payments are excluded from the table, please disclose
the
significant contractual terms of the debt and any other additional
information that is material to an understanding of these future
cash
flows.  Please revise accordingly in future filings.

Notes to the Consolidated Financial Statements

Note 8 Incentive Compensation Plan - page F-17

3. We note your disclosure regarding the calculation of fair value
for
options granted to employees during each of the three years ended
Decmber 31, 2004. We note that you have elected to use the minimum
value method and therefore have excluded volatility from the
Black-
Scholes pricing model. After the Company`s initial public offering
of
its stock on March 26, 2004, the minimum value method was no
longer an
appropriate method of determining fair value of the options issued
to
employees. Please refer to FAS No. 123, paragraph 19 for guidance.
Please revise accordingly in future filings.

Note 15 Candy Fleet Offshore Supply Vessel Acquisitions - page F-
22

4. We note your disclosure regarding the acquisition of six
offshore
supply vehicles during 2003 for approximately $54 million. We
further
note that under the tests for acquired businesses financial
statement
presentation that it appears the assets acquired and the
investment
made are both less than 20%, based on the information disclosed.
We
also note the disclosure that income statement results for these
vehicles are immaterial to the results of Hornbeck. Your July 7,
2003,
Form 8-K filing includes the Asset Purchase Agreement for this
transaction. Within this document, Attachment A includes the
unaudited
financial statements for the vehicles purchased. However, you note
that this and other Attachments are not included in the EDGAR
filing
but are available on request. Please supplementally provide these
financial statements to us and support your conclusion that the
income
test for acquired businesses has not been met in this acquisition.

Please respond to confirm that such comments will be complied
with,
or, if certain of the comments are deemed inappropriate by the
Company, advise the staff of the reason thereof.

Pursuant to Rule 101(a)(3) of Regulation S-T, your response should
be
submitted in electronic form, under the label "corresp" with a
copy to
the staff.  Please respond within fifteen (15) business days.

You may contact Rob Perdue at (202) 824-5536 or Lyn Shenk,
Assistant
Chief Accountant, at (202) 824-5369 if you have questions
regarding
comments on the financial statements and related matters.  Please
contact the undersigned at (202) 942-1995 with any other
questions.


								Sincerely,



								David R. Humphrey
								Branch Chief


Via facsimile:  James O. Harp, Jr., CFO
		(985) 727-2006
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Mr. Todd M. Hornbeck
Hornbeck Offshore Services, Inc.
April 13, 2005
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