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                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

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                                    FORM 6-K

                        REPORT OF FOREIGN PRIVATE ISSUER

                    Pursuant to Rule 13a-16 or 15d-16 of the
                         Securities Exchange Act of 1934

                         For the month of February, 2008

                        Commission File Number: 000-21742

                                   Acergy S.A.
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                 (Translation of registrant's name into English)

                             c/o Acergy M.S. Limited
                                  Dolphin House
                                  Windmill Road
                                Sunbury-on-Thames
                          Middlesex, TW16 7HT, England
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                    (Address of principal executive offices)

     Indicate by check mark whether the registrant files or will file annual
reports under cover Form 20-F or Form 40-F.

                    Form 20-F [X]              Form 40-F [ ]

     Indicate by check mark if the registrant is submitting the Form 6-K in
paper as permitted by Regulation S-T Rule 101(b)(1): [ ]

     Indicate by check mark if the registrant is submitting the Form 6-K in
paper as permitted by Regulation S-T Rule 101(b)(7): [ ]

     Indicate by check mark whether by furnishing the information contained in
this Form, the registrant is also thereby furnishing the information to the
Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

                    Yes [ ]                    No [X]

     If "Yes" is marked, indicate below the file number assigned to the
registrant in connection with Rule 12g3-2(b): 82-________

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Attached herewith as Exhibit 99.1 is a press release, dated February 20, 2008,
whereby Acergy S.A. (the "Company" or "Acergy") announced that following
requirements of Luxembourg Law introduced on January 11, 2008, implementing
Directive 2004/109/CE (the Transparency Directive), Acergy would today like to
notify the market of the following:

As at February 19, 2008, the issued share capital of Acergy consisted of
194,953,972 listed shares of nominal value, each with voting rights so that the
total number of voting rights is 194,953,972.

The above figure may be used by shareholders as the denominator for the
calculations by which they will determine if they are required to notify their
interest in, or a change in their interest in, Acergy.

The attached press release shall be deemed to be incorporated by reference into
the prospectuses forming a part of the Company's Registration Statements on Form
S-8 (No. 33-85168, No. 333-9292, No. 333-74321, No. 333-124983 and
No. 333-124997) and the Company's Registration Statements on Form F-3 and
Form F-3/A (No. 333-86288) and to be a part of such prospectuses from the date
of the filing thereof.

Certain statements set forth above and contained in the press release furnished
pursuant to this Form 6-K may include "forward-looking statements" within the
meaning of Section 27A of the Securities Act of 1933 and Section 21E of the
Securities Exchange Act of 1934. These statements may be identified by the use
of words like "anticipate," "believe," "estimate," "expect," "intend," "may,"
"plan," "project," "will," "should," "seek," and similar expressions. The
forward-looking statements reflect our current views and assumptions and are
subject to risks and uncertainties. The following factors, and others which are
discussed in our public filings and submissions with the U.S. Securities and
Exchange Commission, are among those that may cause actual and future results
and trends to differ materially from our forward-looking statements: our ability
to recover costs on significant projects; the general economic conditions and
competition in the markets and businesses in which we operate; our relationship
with significant clients; the outcome of legal and administrative proceedings or
governmental enquiries; uncertainties inherent in operating internationally; the
timely delivery of ships on order and the timely completion of ship conversion
programmes; the impact of laws and regulations; and operating hazards, including
spills and environmental damage. Many of these factors are beyond our ability to
control or predict. Given these factors, you should not place undue reliance on
the forward-looking statements.

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                                    SIGNATURE

          Pursuant to the requirements of the Securities Exchange Act of 1934,
the registrant has duly caused this report to be signed on its behalf by the
undersigned, thereunto duly authorized.

                                                  ACERGY S.A.


Date: February 25, 2008                           By: /s/ Tom Ehret
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                                                  Name:  Tom Ehret
                                                  Title: Chief Executive Officer