HMS Searcher was a Ruler-class escort carrier of the Royal Navy. Built in Seattle as a Bogue-class, she was transferred to the United Kingdom under Lend-Lease. Launched in 1942 she served until 29 November 1945. She was sold into merchant service and renamed Captain Theo. In 1966, she was renamed again to Oriental Banker and was finally scrapped in Taiwan in 1976. Design and description Ruler-class ships were larger and had a greater aircraft capacity than the preceding American-built escort carrier classes, and were laid down as escort carriers, not converted from merchant ships. They had a complement of 646 men and an overall length of , a beam of and a draught of . Propulsion was provided by one shaft, two boilers and a steam turbine giving 9,350 shaft horsepower, which could propel the ship at . Aircraft facilities were a small combined bridge–flight control on the starboard side, two aircraft lifts by , one aircraft catapult and nine arrestor wires. Aircraft could be housed in the by hangar below the flight deck. Her armament consisted of two 4"/50, 5"/38 or 5"/51 Dual Purpose guns in single mounts, sixteen 40 mm Bofors anti-aircraft guns in twin mounts and twenty 20 mm Oerlikon anti-aircraft guns in single mounts. They had a maximum aircraft capacity of twenty-four aircraft which could be a mixture of Grumman Martlet, Vought F4U Corsair or Hawker Sea Hurricane fighter aircraft and Fairey Swordfish or Grumman Avenger anti-submarine aircraft. Wartime Service From 1943 Searcher operated mainly around the UK as a Fighter Carrier. In late December 1943 she provided Atlantic convoy escort, escorting ships to the US, and arriving at Norfolk on 2 January 1944. She participated in the attacks on the German battleship Tirpitz as part of the Home Fleet Strike force of Operation Tungsten, during which her role was to provide fighter cover. In August 1944 she took part in Operation Dragoon, the Allied invasion of Southern France. On 4 May 1945 aircraft from the escort carriers Searcher, , and , taking part in Operation Judgement, sank the in Kilbotn harbour in the Arctic near Harstad, Norway. Grumman TBF Avenger torpedo bombers escorted by Grumman F4F Wildcat fighters attacked the U-boat crew barracks ship MS Black Watch, the submarine tender MS Senja and the floating flak battery Thetis (the former Norwegian coastal defence ship ). U-711 was alongside Black Watch when she was sunk in