HMS Ocelot (S17) is an Oberon-class diesel-electric submarine operated by the Royal Navy, notable for its role in Cold War clandestine operations and its construction at Chatham Dockyard. The Oberon class was a development of the Porpoise class, featuring similar external dimensions but upgraded internal equipment and a higher-grade steel pressure hull, enhancing durability and operational capabilities. Measuring 241 feet (73 meters) between perpendiculars and 295.2 feet (90 meters) overall, HMS Ocelot had a beam of 26.5 feet (8.1 meters) and a draught of 18 feet (5.5 meters). Its displacement was 1,610 tons at standard load, increasing to 2,030 tons when surfaced and 2,410 tons submerged. Propulsion was provided by two Admiralty Standard Range 16 VMS diesel generators and two electric motors delivering 3,000 shaft horsepower each, driving 7-foot-diameter three-bladed propellers capable of reaching speeds of 17 knots submerged and 12 knots on the surface. Armed with eight 21-inch torpedo tubes (six forward, two aft), HMS Ocelot could carry up to 24 torpedoes. Its sensor suite included Type 186 and Type 187 sonars and an I-band surface search radar, supporting stealth and reconnaissance missions. The vessel's complement consisted of 68 personnel, including six officers and 62 sailors. Laid down on 17 November 1960 and launched on 5 May 1962 at Chatham Dockyard, HMS Ocelot was commissioned on 31 January 1964. As the last submarine built at Chatham for the Royal Navy, she served initially with the 3rd Submarine Squadron at HMNB Clyde in Faslane. During the 1960s, Ocelot participated in covert missions, reflecting its strategic importance during the Cold War era. She notably attended the 1977 Silver Jubilee Fleet Review off Spithead. HMS Ocelot was decommissioned in August 1991 amid declining conventional submarine numbers in the Royal Navy. Sold in 1992, she was preserved as a museum at Chatham Historic Dockyard, where her interior was made accessible to the public and was even added to Google Street View in 2013. HMS Ocelot remains a significant maritime relic, exemplifying Cold War submarine design and British naval history.

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