HMS Royal Oak was a Revenge-class battleship constructed for the Royal Navy, launched on 17 November 1914 and commissioned on 1 May 1916. She measured approximately 620 feet 7 inches (189.2 meters) in length overall, with a beam of 88 feet 6 inches (27 meters) and a deep draught of 33 feet 7 inches (10.2 meters). Her design displacement was 27,790 long tons (28,240 tonnes), increasing to 31,130 long tons (31,630 tonnes) at deep load. Powered by two Parsons steam turbines fed by 18 Yarrow boilers, Royal Oak was rated at 40,000 shaft horsepower, capable of reaching speeds up to 23 knots, although during trials she achieved only 22 knots. Her range was approximately 7,000 nautical miles at 10 knots. Royal Oak's armament comprised eight 15-inch (381 mm) guns in four twin turrets, with two superfiring pairs fore and aft, and twelve 6-inch (152 mm) guns along her broadside. She also carried two quick-firing 3-inch AA guns and four submerged 21-inch torpedo tubes. Her armor protection included a main waterline belt up to 13 inches (330 mm) thick, with turret armor up to 13 inches and conning tower armor of 13 inches. Throughout her career, she underwent several refits, notably between 1922 and 1924, and again in the 1930s, which enhanced her anti-aircraft defenses, added anti-torpedo bulges, and modernized fire control systems. Royal Oak served prominently during World War I, participating in the Battle of Jutland and later in various fleet actions, including attempts to intercept German operations. Postwar, she was transferred to the Mediterranean Fleet and involved in the infamous 1928 "Royal Oak Mutiny" controversy, which damaged her reputation. By the late 1930s, her obsolescence was apparent, and she was stationed at Scapa Flow at the outbreak of World War II. On 14 October 1939, she was torpedoed and sunk by German submarine U-47 in Scapa Flow, resulting in the loss of 835 crew members. Her wreck lies nearly upside down in 100 feet of water and is designated a war grave, with ongoing efforts to monitor and preserve her remains. The sinking underscored the vulnerability of even the most formidable ships in the face of submarine warfare.

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