Since 1983, Offshore Systems, Inc. (OSI) has been the premiere fuel and dock facility in Western Alaska. OSI provides a full compliment of marine terminal services to all sectors of maritime commerce with special emphasis on the North Pacific and Bering Sea fishing fleets. Located near the head of Captain's Bay, Offshore Systems, Inc. (OSI) in Dutch Harbor is protected in most weather conditions. Discover how our services, personnel, and facilities are all focused on filling your important demands.