HMS Alcide (P415) was an Amphion-class submarine of the Royal Navy, constructed by Vickers-Armstrongs and launched on 12 April 1945. She featured a displacement of 1,360 long tons (1,380 tonnes) when surfaced and 1,590 long tons (1,620 tonnes) when submerged. The vessel measured 293 feet 6 inches (89.46 meters) in length, with a beam of 22 feet 4 inches (6.81 meters) and a draught of 18 feet 1 inch (5.51 meters). Her design incorporated two Admiralty ML eight-cylinder diesel engines producing 2,150 horsepower each, which powered her surface propulsion. Additionally, she was equipped with four electric motors generating 625 horsepower each, driving two shafts for submerged operations. HMS Alcide could carry up to 219 tonnes (241 short tons) of diesel fuel, typically operating with between 159 and 165 tonnes (175–182 short tons). Her maximum surface speed was 18.5 knots (34.3 km/h), while her submerged speed reached 8 knots (15 km/h). When underwater, she could operate at 3 knots for 90 nautical miles (170 km) or at 8 knots for 16 nautical miles (30 km). On the surface, her range was extensive, capable of traveling 15,200 nautical miles (28,200 km) at 10 knots, or 10,500 nautical miles (19,400 km) at 11 knots. HMS Alcide was armed with ten 21-inch (530 mm) torpedo tubes—six in the bow and four in the stern—capable of carrying twenty torpedoes. Her armament also included a QF 4-inch naval gun Mk XXIII, an Oerlikon 20 mm cannon, and a .303 British Vickers machine gun, making her well-equipped for various combat scenarios. The submarine’s crew consisted of 61 personnel. Throughout her service, Alcide participated in notable activities, including a deployment to Canada in 1952 for anti-submarine training with the Royal Canadian Navy. She also took part in Navy Days at Portsmouth in 1968. Her design and operational history reflect the post-World War II evolution of Royal Navy submarines, emphasizing versatility and technological advancement during the early Cold War period.

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