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 July, 2005

                        Commission File Number: 000-21742

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

                          c/o Stolt Offshore M.S. Ltd.
                                  Dolphin House
                                  Windmill Road
                                Sunbury-on-Thames
                          Middlesex, TW16 7HT, 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>

In accordance with General Instruction B, item (i), attached herewith as Exhibit
99.1 is a press release, dated July 11, 2005, whereby Stolt Offshore S.A.
("Stolt Offshore" or the "Company") announced the signing of a letter of
authorization for the design, supply and offshore installation of a Deepwater
Offloading Export System for the Agbami development offshore Nigeria. Other
Partners in the Agbami Development include Texaco Nigeria Outer Shelf Inc. (an
affiliate of the Chevron Corporation), Petroleo Brasileiro Nigeria Limited,
Statoil Nigeria Limited, Famfa Oil Limited and the NNPC.

The letter of authorization was signed by a consortium of Stolt Offshore, SBM
and a Chevron subsidiary, Star Deep Water Petroleum Limited, Nigeria. The work
to be carried out by Stolt Offshore amounts to approximately $50 million and is
for the fabrication and installation of two 20" steel oil offloading pipelines
and the installation of floating offloading hoses. The offloading buoy, which is
23 meters in diameter, together with its moorings will be supplied and installed
by SBM. Stolt Offshore's Globestar yard at Warri will be used as the onshore
base and for logistic support for this project. The offloading system will be
installed in a water depth of 1,400 meters by the Seaway Polaris during the
first quarter of 2008.

The information set forth above 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 and No. 333-74321) 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. 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 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 the Company's current views and assumptions
and are subject to risks and uncertainties. The following factors, and others
which are discussed in the Company's 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 the Company's
forward-looking statements: the general economic conditions and competition in
the markets and businesses in which the Company operates; the Company's
relationship with significant customers; the outcome of legal proceedings or
governmental inquiries; uncertainties inherent in operating internationally; the
impact of laws and regulations; and operating hazards, including spills and
environmental damage. Many of these factors are beyond the Company's ability to
control or predict. Given these factors, you should not place undue reliance on
the forward-looking statements.
<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.

                                              STOLT OFFSHORE S.A.

Date:  July 13, 2005                          By: /s/ Stuart Jackson
                                                 -------------------------------
                                                 Name:   Stuart Jackson
                                                 Title:  Chief Financial Officer