for their RN service and returned to the US Navy after the war. Out of the first group of 22 ships, 11 were transferred to the RN and reclassified as . These ships had been converted from Maritime Commission Type C3 cargo ships that were finished or had already been laid down. A second group of 23 ships were built from the keel up, based on C3-S-A1 or C3-S-A1 plans, and transferred to the RN and reclassified as , or Ameer class, in British service, and sometimes as the Prince William class by the US Navy. As delivered, these carriers required modifications to conform to Royal Naval standards. The Attacker class ships had their conversions carried out in drydocks in United Kingdom, but due to these ports being overwhelmed 19 of the 23 ships of the Ameer class were converted by Burrard Dry Dock at Vancouver, British Columbia, Canada. These included extending the flight deck, fitting redesigned flying controls and fighter direction layout, modifications to the hangar, accommodation and store rooms, extra safety measures, oiling at sea arrangements, gunnery and other internal communications, extra wireless and radio facilities, ship blackout arrangements and other items deemed necessary for British service. The consequential delays in getting these ships into active service caused critical comments from some in the US Navy. Ships of class Converted from C-3 cargo ships. First group Second group Built from the keel up as escort carriers. All were built by the Seattle-Tacoma Shipbuilding Corporation. General characteristics as the Attacker class, except for displacement and armament. See also List of aircraft carriers List of aircraft carriers of World War II List of ship classes of World War II References Bibliography External links Bogue class at UBoat.net repeat Bogue class at UBoat.net Aircraft carriers of the Royal Navy Escort aircraft carrier classes World War II escort aircraft carriers of the United States World War II aircraft carriers of the United Kingdom