Ruler-class escort carrierW
Ruler-class escort carrier

The Ruler class of escort aircraft carriers served with the Royal Navy during the Second World War. All twenty-three ships were built by the Seattle-Tacoma Shipbuilding Corporation in the United States as Bogue-class escort carriers, supplied under Lend-Lease to the United Kingdom. They were the most numerous single class of aircraft carriers in service with the Royal Navy.

HMS Ameer (D01)W
HMS Ameer (D01)

HMS Ameer (D01) was an American escort carrier, the USS Baffins (CVE-35), that was transferred to the Royal Navy in mid-1943. As a Ruler-class escort carrier served in the Far East until the end of the war. Ameer was returned to the US Navy in 1946 and sold off to commercial service.

HMS ArbiterW
HMS Arbiter

USS St. Simon (CVE-51), an escort aircraft carrier originally classified as an auxiliary aircraft carrier, was laid down on 26 April 1943 at Tacoma, Washington, by the Seattle-Tacoma Shipbuilding Corporation, under a Maritime Commission contract ; reclassified as an escort aircraft carrier, CVE-51, on 15 July 1943; launched on 9 September 1943; sponsored by Mrs. R. H. Lewis, the wife of Major General R. H. Lewis, Commanding General, Northwestern Sector, Fort Lewis, Washington; assigned to the Commercial Iron Works, Portland, Oregon, for the completion of construction; and delivered to the Royal Navy, under lend-lease, on 31 December 1943.

HMS AthelingW
HMS Atheling

HMS Atheling (D51) was a Royal Navy Ruler-class escort carrier of the Second World War. She was a US built ship provided under lend lease and returned to the US at the end of hostilities.

HMS Begum (D38)W
HMS Begum (D38)

USS Bolinas (CVE-36) was an escort carrier launched 11 November 1942 by Seattle-Tacoma Shipbuilding, Tacoma, Washington; sponsored by Mrs. G. B. Sherwood, wife of Commander Sherwood; and commissioned 22 July 1943, Captain H. L. Meadow in command.

HMS Emperor (D98)W
HMS Emperor (D98)

USS Pybus (CVE-34) was initially a United States Navy Bogue-class escort carrier. The ship was transferred to the United Kingdom for service in the Royal Navy as the Ruler-class escort carrier HMS Emperor (D98) as part of the Lend-Lease program of World War II. Entering service in 1943, the ship took part in operations against the German battleship Tirpitz and the invasions of Normandy and southern France. Returned to the United States following the war, the carrier was sold for scrap in 1946.

HMS Empress (D42)W
HMS Empress (D42)

USS Carnegie (CVE-38) was an escort aircraft carrier built in 1942-43 for transfer to the United Kingdom. She was reclassified ACV-38 on 20 August 1942, and CVE-38 on 15 July 1943. She was commissioned on 9 August 1943 for a period of three days prior to being turned over to the United Kingdom, under whom she served as HMS Empress (D42).

HMS Khedive (D62)W
HMS Khedive (D62)

USS Cordova (CVE-39) was an escort carrier launched 27 December 1942 by Seattle-Tacoma Shipbuilding of Tacoma, Washington; sponsored by Mrs. A. E. Mitchell. Reclassified CVE-39 on 15 July 1943, Cordova was transferred to the Royal Navy on 25 August 1943, as HMS Khedive (D62) Khedive served as the command ship for the South of France invasion in August 1944. From April to August 1945 was with the East Indies Fleet as part of the 21st Aircraft Carrier Squadron. ugust Khedive was to take part in the invasion of Singapore in September 1945, codenamed Operation Tiderace. But with the Japanese surrender, she was merely deployed to the island for security.

HMS Nabob (D77)W
HMS Nabob (D77)

HMS Nabob (D77) was a Ruler-class escort aircraft carrier which served in the Royal Navy during 1943 and 1944. The ship was built in the United States as the Bogue-class USS Edisto (CVE-41) but did not serve with the United States Navy. In August 1944 the ship was torpedoed by the German submarine U-354 while participating in an attack on the German battleship Tirpitz. Nabob survived the attack, but upon returning to port, was considered too damaged to repair. The escort carrier remained in port for the rest of the war and was returned to the United States following it. Nabob is one of two Royal Navy escort carriers built in the United States which is listed as lost in action during World War II. The ship was sold for scrap by the United States but found a second life when purchased and converted for mercantile use under her British name, Nabob. Later renamed Glory, the ship was sold for scrapping in 1977.

HMS Patroller (D07)W
HMS Patroller (D07)

HMS Patroller was an escort carrier in the Royal Navy during the Second World War. Laid down in 1942 at the Seattle-Tacoma Shipbuilding company, she was originally named USS Keweenaw (CVE-44). USS Keweenaw was an escort carrier laid down under Maritime Commission contract by Seattle-Tacoma Shipbuilding of Tacoma, Washington, 27 November 1942; launched 6 May 1943; sponsored by Mrs. R. G. Risley; assigned to the United Kingdom 10 June 1943; reclassified CVE-44 on 15 July 1943; and transferred to the United Kingdom under lend-lease 22 October 1943.

HMS Premier (D23)W
HMS Premier (D23)

The first USS Estero (CVE-42) was an escort aircraft carrier launched 22 March 1943 by the Seattle-Tacoma Shipbuilding Corporation, Seattle, Washington, and sponsored by Mrs. C. N. Ingraham. She was reclassified CVE-42 on 15 July 1943. Completed in October 1943, she was transferred to the Royal Navy on 3 November 1943 and commissioned the same day as HMS Premier.

HMS Puncher (D79)W
HMS Puncher (D79)

USS Willapa (AVG-53/ACV-53/CVE-53) was a Bogue-class escort carrier built during World War II for the United States Navy. Never seeing American service, the ship was transferred to the United Kingdom as part of Lend-Lease. The escort carrier was renamed HMS Puncher (D79) of the British Ruler class and crewed by the Royal Canadian Navy with aircrew from the Fleet Air Arm. Primarily used as an aircraft transport, Puncher took part in operations along the Norwegian coast towards the end of the war. Following the war the ship was converted for mercantile service and renamed Muncaster Castle, Bardic and Ben Nevis, before being broken up in 1973.

HMS Queen (D19)W
HMS Queen (D19)

The USS St. Andrews (CVE-49) was assigned to MC hull 260 on 23 August 1942, a ship to be built to modified C3-S-A1 plans. She was laid down on 12 March 1943 by the Seattle-Tacoma Shipbuilding Corporation of Tacoma, Washington; redesignated CVE-49 on 15 July; and launched on 31 July; sponsored by Mrs. Robert W. Morse; transferred to the United Kingdom under Lend-Lease on 7 December; and commissioned the same day as HMS Queen (D19) in the Royal Navy.

HMS Rajah (D10)W
HMS Rajah (D10)

USS Prince (CVE-45) was an escort carrier laid down on 17 December 1942 by the Seattle-Tacoma Shipbuilding Corporation of Tacoma, Washington. She was renamed Prince on 13 November 1942 and launched on 18 May 1943. She was sponsored by Mrs. J. L. McGuigan, reclassified CVE-45 on 15 July 1943 and transferred to the United Kingdom under Lend-Lease on 17 October 1943.

HMS Ranee (D03)W
HMS Ranee (D03)

USS Niantic (CVE-46) was a US escort carrier, that served in the Royal Navy as HMS Ranee (D03).

HMS Reaper (D82)W
HMS Reaper (D82)

USS Winjah (CVE-54), was a Bogue-class escort carrier of the United States Navy, leased to the Royal Navy during World War II.

HMS RulerW
HMS Ruler

HMS Ruler was a Ruler-class escort carrier of the British Royal Navy during World War II. She was built in the United States as the Bogue-class carrier St. Joseph (AVG/CVE/ACV-50) for Lend-Lease to the United Kingdom.

HMS Shah (D21)W
HMS Shah (D21)

USS Jamaica (CVE-43), was an escort carrier of World War II that served in the British Royal Navy as HMS Shah (D21). Returned to the United States at war's end, she was converted into a merchant vessel and she was sold into civilian service in 1946 as Salta. She was ultimately scrapped in 1966.

HMS Slinger (D26)W
HMS Slinger (D26)

USS Chatham (CVE-32) was built at the Seattle-Tacoma S/Y, Hull #27, Seattle, Washington and transferred to the United Kingdom 11 August 1943 under lend-lease and renamed HMS Slinger (D26). Outfitted by the British as a transport carrier, the ship was mined on 5 February 1944 but returned to service, 17 October. In 1945, she was transferred for service in the Pacific as a fighter carrier and was attached to the 30th Aircraft Carrier Squadron. Following the war, she was returned to United States custody on 27 February 1946 and was sold/converted by Robin Line 21 November 1946 as Robin Mowbray. Moore-McCormack Lines, Inc., purchased Robin Line in 1958. She was scrapped in Kaohsiung Taiwan in 1969-1970.

HMS Smiter (D55)W
HMS Smiter (D55)

USS Vermillion (CVE-52) was laid down on 10 May 1943 by the Seattle-Tacoma Shipbuilding Corporation as a Bogue-class auxiliary aircraft carrier; redesignated an escort aircraft carrier, on 10 June 1943; assigned to the United Kingdom under Lend-Lease on 23 June 1943; launched on 27 September 1943; and accepted by Britain on 20 January 1944.

HMS Speaker (D90)W
HMS Speaker (D90)

HMS Speaker (D90), a Ruler-class escort carrier, based on a "C3" hull, was originally the Bogue-class USS Delgada (AVG/ACV/CVE-40), which was transferred to the United Kingdom under the Lend-Lease program.

HMS Thane (D48)W
HMS Thane (D48)

USS Sunset (CVE-48) was a Bogue-class escort carrier. Assigned on 23 August 1942 to MC hull 259, a modified C3-S-A1 laid down on 23 February 1943 by Seattle-Tacoma Shipbuilding of Tacoma, Washington; launched on 15 July and redesignated CVE-48 the same day; sponsored by Mrs. C.E. Taylor. She was transferred to the United Kingdom under Lend-Lease agreement on 19 November; and commissioned the same day as HMS Thane (D48), a Ruler-class escort carrier in the Royal Navy.

HMS Trouncer (D85)W
HMS Trouncer (D85)

The USS Perdido (CVE-47) was a Bogue-class escort carrier laid down as ACV-47 under Maritime Commission contract by Seattle-Tacoma Shipbuilding of Tacoma, Washington, 1 February 1943; launched 16 June 1943; sponsored by Mrs. H. M. Bemis, reclassified as CVE-47 on 15 July 1943; and completed at the Commercial Iron Works, Portland, Oregon.

HMS Trumpeter (D09)W
HMS Trumpeter (D09)

USS Bastian (CVE-37) was a Bogue-class escort aircraft carrier built by Seattle-Tacoma Shipbuilding of Tacoma, Washington, laid down on 25 August 1942 and launched 15 December 1942. She was transferred to the United Kingdom, under Lend-Lease and commissioned on 4 August 1943 as the Ruler-class escort carrier HMS Trumpeter (D09).