GulfMark Offshore, Inc. provides offshore marine support and transportation services. The Company offers these services to companies engaged in the offshore exploration and production of oil and natural gas. The Company operates in three segments: the North Sea (N. Sea), Southeast Asia (SEA) and the Americas. Its vessels transport materials, supplies and personnel to offshore facilities, as well as move and position drilling and production facilities. The operations are conducted in the North Sea, offshore Southeast Asia and offshore in the Americas. It operates a fleet of over 70 owned or managed offshore supply vessels (OSVs), which include over 30 vessels in the North Sea, over 10 vessels offshore Southeast Asia and over 30 vessels offshore the Americas. Its customers include oil and natural gas companies, independent oil and natural gas exploration and production companies working in international markets, and foreign Government-owned or controlled oil and natural gas companies.