HMAS Onslow (SS 60/SSG 60) is an Oberon-class submarine operated by the Royal Australian Navy, notable for its technical specifications, service history, and role as a museum ship. Measuring 295.2 feet (90.0 meters) in length with a beam of 26.5 feet (8.1 meters) and a draught of 18 feet (5.5 meters) when surfaced, Onslow displaced 2,030 tons on the surface and 2,410 tons submerged. Its propulsion system comprised two English Electric motors each delivering 3,500 brake horsepower, driven by two Admiralty Standard Range supercharged V16 diesel generators, enabling speeds of up to 12 knots on the surface and 17 knots submerged. The submarine’s range was approximately 9,000 nautical miles at 12 knots, with a test depth of 200 meters. Constructed in Scotland by Scotts Shipbuilding and Engineering Company, Onslow was laid down on December 4, 1967, launched on December 3, 1968 by Princess Alexandra, and commissioned into the RAN on December 22, 1969. Named after the Western Australian town of Onslow and Sir Alexander Onslow, the vessel’s badge features a judge's wig, and its motto is "Festina Lente" ("Hasten Slowly"). The submarine's armament included six 21-inch bow torpedo tubes capable of firing torpedoes or sea mines, initially equipped with British Mark 8 torpedoes, later upgraded to U.S. Mark 48 torpedoes and equipped with the Harpoon anti-ship missile during a 1982-84 refit, making it the first conventionally powered submarine fitted with guided anti-ship missiles. Throughout its service, Onslow participated in numerous exercises, including notable success in Exercise Kangaroo 3 (1980), where it "sunk" seven ships, and in 1998, "sank" the USS Carl Vinson during RIMPAC. The vessel also saw operational deployments in Southeast Asia and participated in multinational exercises, including visits to the US West Coast. A significant incident occurred in 1981 when carbon monoxide poisoning from a generator failure resulted in crew casualties, leading to operational and procedural changes. Decommissioned in March 1999, Onslow was transferred to the Australian National Maritime Museum, where it is preserved as a museum ship. Over the years, it has undergone several maintenance and restoration efforts, including hull cleaning, repainting, and upgrades, maintaining its status as an important maritime heritage artifact and a symbol of Australia's submarine capabilities.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.