Extension of offer period

NOT FOR PUBLIC DISTRIBUTION, DIRECTLY OR INDIRECTLY, IN OR INTO THE UNITED STATES OF AMERICA, SOUTH AFRICA, CANADA, AUSTRALIA OR JAPAN

13 September 2010 - Reference is made to the offer document dated 27 July 2010 from BW Offshore Limited ("BW Offshore") regarding the voluntary exchange offer (the "Offer") for all of the issued and outstanding shares of Prosafe Production Public Limited not currently owned, directly or indirectly, by BW Offshore. The initial acceptance period in the Offer (the "Offer Period") was from and including 29 July 2010 to and including 25 August 2010 at 17:30 (CET). In a stock exchange notice of 16 August 2010 it was announced that the Offer Period was extended to 8 September 2010 at 17:30 CET. In a stock exchange notice of 8 September 2010 it was announced that the Offer Period was further extended to 10 September 2010 at 17:30 CET.

BW Offshore has decided to further extend the Offer Period by three business days. Following this extension, the Offer Period will expire on 15 September 2010 at 17:30 (CET).

For further information, please contact:

Carl K. Arnet, CEO, +65 9630 3290
Knut R. Sæthre, CFO, +47 9111 7876

About BW Offshore

BW Offshore is one of the world's leading FPSO contractors and a market leader within advanced offshore loading and production systems to the oil and gas industry. BW Offshore has more than 25 years' experience and has successfully delivered 14 FPSO projects and 50 turrets and offshore terminals. BW Offshore's technology division APL has delivered solutions for production vessels, storage vessels and tankers in a wide range of field developments. Adapting through competence, in-house technology, solid project execution and operational excellence, BW Offshore ensures that customer needs are met through versatile solutions for offshore oil and gas projects. BW Offshore has a global network with offices in Europe, Asia Pacific, West Africa and the Americas. BW Offshore has 1,100 employees and is listed on the Oslo Stock Exchange. For more information, please visit www.bwoffshore.com and www.apl.no.

This information is subject to the disclosure requirements pursuant to Section 5-12 of the Norwegian Securities Trading Act.

This announcement is not an offer for sale of any securities in the United States. Securities may not be offered or sold in the United States absent registration or an exemption from registration under the U.S. Securities Act. BW Offshore has not registered and does not intend to register any portion of any offering of shares in the United States or to conduct a public offering of any securities in the United States.