News Release   November 30 2005 OSI secures Royal Danish Navy contracts for more than C$400,000; total business-to-date with key customer exceeds C$8 million Vancouver, Canada — Offshore Systems International Ltd. (TSX: OSI; OTCBB: OFSYF) has won new contracts for more than C$400,000 to immediately outfit additional Royal Danish Navy ships with electronic chart navigation systems. "The Royal Danish Navy is a pivotal customer for OSI," said Ken Kirkpatrick, President and CEO of OSI. "Since their initial C$5 million prime contract four years ago, the Royal Danish Navy has awarded OSI over C$3 million in follow-on orders. With the new contracts announced today, total business-to-date with the Navy surpasses C$8 million." OSI won its first open international win and major NATO contract outside of Canada in August 2001 with the Royal Danish Navy. In each year since the initial contract, OSI has received follow-on orders for additional services, upgrades or new equipment from the Navy. Mr. Kirkpatrick continued, "A key part of the business success of OSI focuses on expanding sales with current customers leading to cumulative revenue from steady, repeat business. Through our long-time relationship with the Royal Danish Navy, we have demonstrated our ability to grow revenue by consistently and repeatedly meeting the specific needs of our customers." OSI’s world-leading electronic chart navigation systems deliver unsurpassed performance meeting the needs of the military market by integrating "real time" electronic chart display with other critical navigational information systems. About OSI Offshore Systems International Ltd. (OSI) makes geographic-intelligence software, systems and data products mainly for large government and civilian customers. The company operates three business units: OSI Navigation Systems (moving-map display systems and software for naval surface ships and submarines); OSI Applications (network-based map and target display software and services for national defence and homeland security) and Mapcon Mapping (digital land mapping and marine charting services for civilian customers). OSI’s common shares are listed on the Toronto Stock Exchange (TSX: OSI) and the OTC Bulletin Board (OTCBB: OFSYF). Visit OSI’s website at www.osil.com for the latest company updates. Forward-Looking Statements This news release contains items that constitute forward-looking statements within the meaning of securities laws including Section 27a of the Securities Act of 1933, as amended, and Section 21e of the Securities Exchange Act of 1934, as amended. These statements are made under the ‘safe harbour’ provisions of the Private Securities Litigation Reform Act of 1995 and, as such, involve known and unknown risks and uncertainties and other factors that may cause the actual results to be materially different from the results implied herein. Offshore Systems International can give no assurances that its representations will be achieved or that it will update them at any time in the future.   For more information contact: Jane Hayward Investor Relations +1 613 287 0462 or +1 888 880 9797 +1 613 287 0466 (FAX) invest@osigeospatial.com