HMS Bulldog (H91) was a B-class destroyer built for the Royal Navy between 1929 and 1931. She displaced approximately 1,360 long tons at standard load and 1,790 long tons at deep load. The vessel measured 323 feet in overall length, with a beam of 32 feet 3 inches and a draught of 12 feet 3 inches. Powered by Parsons geared steam turbines driving two shafts, she could reach a maximum speed of 35 knots, with steam generated by three Admiralty 3-drum boilers. Her fuel capacity allowed a range of 4,800 nautical miles at 15 knots. The ship’s complement was 134 officers and crew, increasing to 142 during wartime. HMS Bulldog was armed with four quick-firing 4.7-inch Mk IX guns in single mounts, designated 'A', 'B', 'X', and 'Y', along with two 40mm QF 2-pounder anti-aircraft guns. She was also equipped with two quadruple 21-inch torpedo tube mounts and initially carried a depth charge complement of 20, later increased to 35, along with Type 119 ASDIC for submarine detection. Her anti-aircraft defenses were expanded during the war, including the addition of a 3-inch AA gun, Hedgehog anti-submarine mortar, and multiple Oerlikon 20mm cannons. Notably, in 1944, a QF 6-pounder gun was mounted on the bow to counter German E-boats. Constructed by Swan Hunter at Wallsend, HMS Bulldog was laid down on 10 August 1929, launched on 6 December 1930, and completed on 8 April 1931 at a cost of £221,408. Initially assigned to the Mediterranean Fleet, she patrolled Spanish waters during the Spanish Civil War and participated in various refits and deployments. During WWII, her service included convoy escort duties, notably in the Atlantic and Arctic, where she distinguished herself. In 1941, she was instrumental in capturing an Enigma machine and codebooks from U-110, a critical intelligence breakthrough. She sank U-719 in 1944 and took part in the liberation of the Channel Islands in May 1945. Surplus after the war, HMS Bulldog was decommissioned and scrapped in 1946, leaving a notable legacy in naval warfare and cryptography intelligence.

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