HMS Cornwallis was a Duncan-class pre-dreadnought battleship of the Royal Navy, notable for its high speed and distinctive design features. Constructed by Thames Ironworks and Shipbuilding Company in London, her keel was laid in July 1899, and she was launched on 17 July 1901. She was completed in February 1904. Measuring approximately 432 feet (132 meters) in length overall, with a beam of 75 feet 6 inches (23.01 meters) and a draft of 25 feet 9 inches (7.85 meters), Cornwallis displaced between 13,270 and 13,745 long tons normally, and up to 15,200 long tons when fully loaded. Her crew numbered around 720 officers and ratings. Powered by twin 4-cylinder triple-expansion engines and twenty-four Belleville boilers, Cornwallis could reach a top speed of 19 knots (35 km/h; 22 mph), making her the fastest battleship in the world at the time. Her range was substantial, capable of steaming over 6,070 nautical miles at 10 knots. Her armament included four 12-inch (305 mm) main guns in twin turrets, twelve 6-inch (152 mm) secondary guns, and smaller caliber anti-torpedo boat guns, along with four submerged 18-inch torpedo tubes. Her armor scheme featured an 8-inch (203 mm) belt, with main battery turrets protected by 8 to 10 inches of armor, and a conning tower with 12-inch-thick sides. Cornwallis saw active service across various fleets, initially serving with the Mediterranean Fleet, then the Channel Fleet, Atlantic Fleet, and later the Home Fleet. During World War I, she participated in key operations such as the Dardanelles campaign, firing the first shots on 19 February 1915. She supported landings and bombardments during the Gallipoli operations, notably at V Beach. Later, she was involved in patrols and convoy duties in the Mediterranean and Indian Ocean. On 9 January 1917, Cornwallis was torpedoed by the German U-boat U-32 off Malta, suffering damage that led to her sinking approximately 30 minutes after the second torpedo struck. Her service history highlights her role as a fast, albeit lightly armored, battleship designed to counter specific Russian threats, and her active engagement in pivotal naval campaigns of the early 20th century.

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