HMS Patroller was an escort carrier operated by the Royal Navy during the Second World War, originally constructed in 1942 by the Seattle-Tacoma Shipbuilding Company in Tacoma, Washington. Laid down under the name USS Keweenaw (CVE-44), she was part of a class of larger escort carriers designed specifically for convoy escort and patrol duties, rather than being conversions of merchant ships. She was launched on May 6, 1943, and sponsored by Mrs. R. G. Risley. Her dimensions were notable: an overall length of 492 feet 3 inches (150.0 meters), a beam of 69 feet 6 inches (21.2 meters), and a draught of 25 feet 6 inches (7.8 meters). Propelled by a single shaft powered by two boilers and a steam turbine, she developed 9,350 shaft horsepower, enabling her to reach speeds of approximately 16.5 knots (30.6 km/h). Her aircraft facilities included a small combined bridge and flight control on the starboard side, two aircraft lifts measuring 43 by 34 feet, one catapult, and nine arrestor wires. The hangar below the flight deck measured 260 by 62 feet, providing ample space for her aircraft complement. Her armament comprised two dual-purpose guns (either 4"/50, 5"/38, or 5"/51 caliber), sixteen 40 mm Bofors anti-aircraft guns in twin mounts, and twenty 20 mm Oerlikon anti-aircraft cannons. She had a maximum aircraft capacity of twenty-four, capable of operating a mix of fighters such as Grumman Martlet, Vought F4U Corsair, or Hawker Sea Hurricane aircraft, as well as anti-submarine aircraft like the Fairey Swordfish or Grumman Avenger. During her service in the Atlantic, HMS Patroller primarily performed convoy escort and patrol duties, with brief periods serving as a transport carrier for both the Royal Navy and Army. After the war, she was returned to the U.S. Navy in December 1946, struck from the naval register in February 1947, and sold to civilian interests, eventually being renamed Almkerk and later Pacific Reliance. She was scrapped in Taiwan in 1974, marking the end of her maritime service. Her design and operational history reflect her importance as a significant component of Allied naval efforts during World War II.

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