HMS Undaunted was a British Royal Navy U-class destroyer launched in 1943 and completed in March 1944. She measured approximately 362 feet 9 inches in overall length, with a beam of 35 feet 8 inches, and a draught of 10 feet at mean load, extending to 14 feet 3 inches at full load. Displacing around 1,777 long tons standard and 2,508 long tons at full load, she was powered by two Admiralty 3-drum water-tube boilers driving Parsons steam turbines rated at 40,000 shaft horsepower, enabling a top speed of 36 knots. Her armament initially included four 4.7-inch guns capable of anti-aircraft fire, alongside twin Bofors 40 mm and four twin Oerlikon 20 mm cannons for close-in defense. She also carried two quadruple 21-inch torpedo mounts and a depth charge outfit with four mortars and two racks, totaling 70 charges, suitable for anti-submarine warfare. Constructed at Cammell Laird's Birkenhead shipyard, she was laid down in September 1942, launched in July 1943, and commissioned in March 1944. During her wartime service, HMS Undaunted participated notably in operations aimed at sinking the German battleship Tirpitz and in the D-Day landings at Sword Beach. She famously transported General Eisenhower from Normandy to Portsmouth, with his signature on a flag presented to her crew. Her service extended through the Mediterranean, escorting troopships from Malta, and into the Pacific theater, where she served as part of the British Pacific Fleet, acting as a guard ship off Yokohama Bay during VJ Day. After the war, she was placed in reserve until her 1954 conversion into a Type 15 fast anti-submarine frigate, which involved significant structural modifications, including the removal of her original superstructure and main guns, and the addition of anti-submarine equipment like Limbo mortars and sonar. She was further fitted with a flight deck in 1959 to operate a small anti-submarine helicopter, becoming a key training and operational vessel until her decommissioning in the early 1970s. HMS Undaunted was ultimately used as a target in missile tests and now rests on the seabed in the Atlantic Ocean, marking her long and distinguished maritime career.

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