Austal Ltd. operates as a global defence prime contractor in the design and construction of customised aluminum defense and commercial vessels. It offers commercial, defense and leisure & tourism products. The company operates through four segments: Henderson Shipyard Operations, USA, Service & Systems, and Philippines Shipyard Operations. The Henderson Shipyard Operations segment manufactures aluminum defense vessels for navy's and border protection agencies for markets worldwide, excluding the USA. The USA segment manufactures aluminum defense vessels for the U.S. Navy. The Service and Systems segment provides training and on-going support and maintenance for vessels and includes the chartering of a vessel to the U.S. Navy's Military Sealift Command. The Philippines Shipyard Operations segment manufactures aluminium commercial vessels for markets worldwide, excluding the USA. Austal was founded by John Rothwell in 1988 and is headquartered in Henderson, Australia.