================================================================================

                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

                                   ----------

                                    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 May, 2008

                        Commission File Number: 000-21742

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

                              200 Hammersmith Road
                                 London, W6 7DL
                                     England
                    ----------------------------------------
                    (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-_________

================================================================================
<PAGE>
Attached herewith as Exhibit 99.1 is a press release, dated May 20, 2008,
whereby Acergy S.A. announced the award of a contract valued at approximately
$50 million for the fabrication, assembly and testing of eight manifolds and
support structures, eight suction piles, twenty-three well jumpers and other
subsea structures for the Usan Oilfield located offshore Nigeria on behalf of
Cameron Offshore Systems Nigeria Ltd. The work will be undertaken at our
Globestar Yard in Warri, Nigeria.

The information set forth above shall be deemed to be incorporated by reference
into the prospectuses forming a part of our Registration Statements on Form S-8
(No. 33-85168, No. 333-9292, No. 333-74321, No. 333-124983 and No. 333-124997)
and our 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. The
attached press release shall not be deemed "filed" for purposes of Section 18 of
the Securities Exchange Act of 1934 or otherwise subject to the liabilities of
that section, nor shall it be deemed incorporated by reference in any filing
under the Securities Act of 1933, except as shall be expressly set forth by
specific reference in such filing.

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. These
statements include, but are not limited to, statements as to the approximated
value of the awarded contract, statements as to the scope and location of our
work thereunder and statements as to our future business strategy and
commitment. 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 program; 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.

                                        1
<PAGE>
                                    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: May 21, 2008                                By: /s/ Stuart Jackson
                                                      --------------------------
                                                  Name:  Stuart Jackson
                                                  Title: Chief Financial Officer