Commencement Bay-class escort carrier

The Commencement Bay-class escort aircraft carriers were based on the Maritime Commission T3 type tanker hull, which gave them a displacement of approximately 23,000 tons and a length of 557 feet (170 m). Unlike most earlier CVE classes which were laid down as something else and converted to aircraft carriers mid-construction, the Commencement Bays were built as carriers from the keel up. Their general layout was similar to the Sangamon-class escort carriers, but some of the Sangamon's engineering shortcomings were addressed.

They entered service late in World War II — USS Commencement Bay launched on 9 May 1944 — so most of them saw little or no operational service. Thirty-three of them were ordered but many were cancelled prior to completion. Nineteen saw commissioned service in the US Navy, four were broken up on the ways at the end of the war, two were accepted from the builders, but never commissioned and the remainder were cancelled before being laid down.

After the war they were seen as potential helicopter, anti-submarine, or auxiliary (transport) carriers, and a number of ships served in these roles during the Korean War. The onrushing jet age ended their lives, as the ships were no longer large enough to safely carry the much larger jet aircraft of the late 1950s, and all units were out of service or reclassified by 1960.

Commencement Bay-class escort carrier
Class Ship
Type Aircraft Carrier
Manufacturer Vigor Shipyards
Production Period 1943 - 1945
Origin United States of America
Country Name Origin Year
United States of America 1945
Country Name Operational Year Retirement Year
United Kingdom - UK (Great Britain) 1945 1971 View
ManufacturerName Production From Production To Quantity
Seattle-Tacoma Shipbuilding Corporation 1943 1945 2 View
Vigor Shipyards 1943 1945 19 View


  • USS Commencement Bay (CVE-105)
  • USS Block Island (CVE-106)
  • USS Gilbert Islands (CVE-107)
  • USS Kula Gulf (CVE-108) originally USS Vermillion Bay
  • USS Cape Gloucester (CVE-109)
  • USS Salerno Bay (CVE-110)
  • USS Vella Gulf (CVE-111) originally named Totem Bay
  • USS Siboney (CVE-112) originally named Frosty Bay
  • USS Puget Sound (CVE-113)
  • USS Rendova (CVE-114) originally named Mosser Bay, then Willamette
  • USS Bairoko (CVE-115) originally named Portage Bay
  • USS Badoeng Strait (CVE-116)
  • USS Saidor (CVE-117) originally named Saltery Bay
  • USS Sicily (CVE-118) originally named Sandy Bay
  • USS Point Cruz (CVE-119) originally named Trocadero Bay
  • USS Mindoro (CVE-120)
  • USS Rabaul (CVE-121) never commissioned, straight to Reserve Fleet
  • USS Palau (CVE-122)
  • USS Tinian (CVE-123) never commissioned, straight to Reserve Fleet
  • USS Bastogne (CVE-124) cancelled
  • USS Eniwetok (CVE-125) cancelled
  • USS Lingayen (CVE-126) cancelled
  • USS Okinawa (CVE-127) cancelled

Builders: Todd Pacific Shipyards
Seattle-Tacoma Shipbuilding Corporation
Operators:  United States Navy
Preceded by: Casablanca-class escort carrier
Succeeded by: Iwo Jima-class amphibious assault ship
Built: 1943–1945
In commission: 1945–1971
Planned: 33
Completed: 19
Cancelled: 14
General characteristics
Type: Escort carrier
Displacement: 10,900 long tons (11,100 t) standard
24,100 long tons (24,500 t) full load
Length: 557 ft (170 m)
Beam: 75 ft (23 m)
105 ft 2 in (32.05 m) flight deck
Draft: 30 ft 8 in (9.35 m)
Propulsion: 2-shaft geared turbines, 16,000 shp
Speed: 19 knots (22 mph; 35 km/h)
Complement: 1,066 officers and men
Armament: 2 × 5"/38 caliber guns (1 × 2)
36 × 40 mm Bofors gun (3 × 4, 12 × 2)
20 × 20 mm Oerlikon cannons
Aircraft carried: 34

End notes