HMS Cornwall was a Monmouth-class armoured cruiser built for the Royal Navy, designed to displace approximately 9,800 long tons. She measured roughly 463 feet 6 inches (141.3 meters) in length, with a beam of 66 feet (20.1 meters) and a deep draught of 25 feet (7.6 meters). Her propulsion system consisted of two 4-cylinder triple-expansion steam engines powered by 31 Belleville boilers, producing a total of 22,000 indicated horsepower, which enabled her to reach a maximum speed of 23 knots. The ship's armament was formidable for her class, featuring fourteen 6-inch (152 mm) breech-loading Mk VII guns, with twin turrets fore and aft and casemates amidships. She also carried ten quick-firing 12-pounder guns for defense against torpedo boats, along with smaller 3-pounder Hotchkiss guns and two submerged 18-inch torpedo tubes. The armour belt was four inches thick amidships and two inches forward, with turret and casemate armour also at four inches. Her deck armour ranged from 0.75 to 2 inches, and her conning tower was protected by ten inches of armour. Laid down on March 11, 1901, at Pembroke Royal Dockyard in Wales, HMS Cornwall was launched on October 29, 1902, and completed by December 1, 1904. Initially assigned to the 2nd Cruiser Squadron of the Channel Fleet, she was refitted in 1907 and became a cadet training ship in 1908, serving with the 4th Cruiser Squadron on the North America and West Indies Station. Notably, she ran aground in 1911 while assisting another cruiser but was successfully refloated and repaired. During World War I, Cornwall played a significant role, capturing a German merchant ship shortly after the war's start and participating in the search for German commerce raiders. She was involved in the Battle of the Falklands, contributing to the destruction of the German East Asia Squadron, notably aiding in sinking the light cruiser Leipzig. She also blockaded the German cruiser Königsberg in East Africa and participated in the Dardanelles Campaign. Later, she served on the China Station and in convoy escort duties off North America. After the war, she returned to training duties before being sold for scrap in 1920. Her service record highlights her as a versatile vessel engaged in key naval operations during 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.