HMS Endymion was a first-class protected cruiser of the Edgar class, built for the Royal Navy and launched on 22 July 1891. She measured 387 feet 6 inches (118.11 meters) in overall length, with a length between perpendiculars of 360 feet (109.73 meters). Her beam was 60 feet (18.29 meters), and she had a draught of 23 feet 9 inches (7.24 meters). Displacing approximately 7,350 long tons (7,470 metric tons), Endymion was designed for both patrol and combat duties. The ship's armament comprised two 9.2-inch guns positioned on the centerline, supported by ten 6-inch guns—four mounted in casemates on the main deck and the remaining six behind open shields. She also carried twelve 6-pounder guns and four 3-pounder guns for anti-torpedo-boat defense, along with four 18-inch torpedo tubes. Her protection featured an arched armoured deck ranging from 3 to 5 inches (76–127 mm) thick at waterline level, casemate armour of 6 inches (152 mm), and 3-inch (76 mm) shields for her main guns. The conning tower was protected by 10 inches (254 mm) of armour. Powered by four cylindrical Fairfields boilers feeding steam at 150 pounds per square inch (1,000 kPa), Endymion's three-cylinder triple-expansion engines drove two shafts, producing 12,000 indicated horsepower (8,900 kW). This propulsion enabled her to reach a top speed of 20 knots (37 km/h). Throughout her service, Endymion participated notably in the Boxer Rebellion in China, where she contributed to suppressing the uprising. She also served during the First World War, including involvement in the Gallipoli Campaign. In 1914, she served as the flagship in Cork Harbour. On 30 August 1918, she was damaged by the German submarine SM UC-37 at Stavros, Greece, but her crew survived. After her decommissioning, she was sold for scrap in Cardiff on 16 March 1920, marking the end of her maritime service.

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