HMS Starfish was a first-batch S-class submarine of the Royal Navy, built during the early 1930s and launched on 14 March 1933. With a length of 202 feet 6 inches (61.7 meters), a beam of 24 feet (7.3 meters), and a mean draught of 11 feet 11 inches (3.6 meters), she was designed for operations in northern European waters, particularly the North and Baltic Seas. Displacing approximately 730 long tons (740 tonnes) on the surface and 927 long tons (942 tonnes) submerged, the vessel was crewed by 38 officers and ratings. Her operational depth reached up to 300 feet (91.4 meters). Powered on the surface by two 775-brake-horsepower diesel engines, each driving a propeller, and submerged by two 650-horsepower electric motors, HMS Starfish could achieve speeds of 13.75 knots (25.5 km/h) on the surface and 10 knots (19 km/h) underwater. Her range was substantial, with 3,700 nautical miles at 10 knots on the surface, and she carried six 21-inch (533 mm) torpedo tubes in the bow, with six reloads, totaling twelve torpedoes. Additionally, she was armed with a 3-inch (76 mm) deck gun. Commissioned in October 1933, HMS Starfish served with the 2nd Submarine Flotilla at the onset of World War II. Her wartime activities included five uneventful patrols in the North Sea, primarily around Norway and Denmark. Her sixth and final patrol began on 6 January 1940 off Heligoland Bight. During this mission on 9 January, she engaged a German minesweeper, M-7, but failed to fire torpedoes due to drill errors. Subsequently, her diving planes jammed, and she was detected by the German vessel. Despite attempts to repair, she was heavily damaged by depth charges, flooding, and hull leaks. Forced to surface, HMS Starfish was abandoned by her crew, who were rescued and taken as prisoners of war, and the submarine sank shortly afterward. Her sinking marked a notable engagement with Oberleutnant Heinrich Timm, who later earned the Iron Cross 2nd Class and became a submarine ace. Efforts to locate her wreck, including a 1940 mission, were unsuccessful. HMS Starfish’s service underscores the perilous nature of early wartime submarine operations in European waters.

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