# Casablanca-class escort carrier

The Casablanca-class escort carrier was a series of escort carriers constructed for the United States Navy during World War II. They are the most numerous class of aircraft carriers ever built. Fifty were laid down, launched and commissioned within the space of less than two years – 3 November 1942 through to 8 July 1944. Despite their numbers, and the preservation of more famous and larger carriers as museums, none of these modest ships survive today. Five were lost to enemy action during World War II and the remainder were scrapped.
Casablanca was the first class designed from keel up as an escort carrier. It had a larger and more useful hangar deck than previous conversions. It also had a larger flight deck than the Bogue class. Unlike larger carriers which had extensive armor, protection was limited to splinter plating. Their small size made them useful for transporting assembled aircraft of various sizes, including ferrying many aircraft types that were unable to operate from their decks. However, aircraft that were operational on the ships were limited to smaller and lighter aircraft such as the Grumman F4F Wildcat. The hull numbers were assigned consecutively, from CVE-55 Casablanca to CVE-104 Munda.
Casablanca-class carriers were built by the Kaiser Shipbuilding Company's Vancouver Yard on the Columbia River in Vancouver, Washington. The Vancouver yard was expressly built in 1942 to construct Liberty ships, but exigencies of war soon saw the yard building LST landing craft and then escort carriers all before the end of the yard's first year in operation. The yard had twelve building ways and a 3,000-foot (910 m) outfitting dock along with a unique additional building slip originally intended to add prefabricated superstructures to Liberty ships. Their relatively small size and mass-production origins led their crews to refer to them as "jeep carriers" or "Kaiser Jeeps" with varying degrees of affection.

## Naming

The Casablanca class initially continued the US Navy's policy of naming escort carriers after bays and sounds, in this case the numerous inlets of the Alexander Archipelago that form the southeast coastline of Alaska, though several were subsequently renamed to carry on the US Navy's tradition of naming aircraft carriers after battles. Those ships that appear to be named after islands, seas, straits or cities actually commemorated battles fought at those locations. Several had their original "Bay" names changed to battle names while under construction, and two of them, Midway (CVE-63) and Coral Sea (CVE-57), lost their battle names mid-career to new Midway-class aircraft carriers, becoming USS St. Lo and USS Anzio respectively. Unlike the larger Essex and Independence-class aircraft carriers, none were named to commemorate historical naval vessels.

## Production time and Navy refusal

Although Essex-class aircraft carriers were completed in 20 months or less, 1941 projections on the basis of the 38-month average pre-war construction period estimated no new fleet carriers could be expected until 1944. Kaiser had reduced construction time of cargo ships (Liberty ships) from more than a year to less than 90 days, and proposed building a fleet of 50 small carriers in less than two years. The US naval authorities refused to approve construction of the Kaiser-built ships until Kaiser went directly to the President's advisers. The Allies were in desperate need of carriers to replace early war losses. Kaiser produced the small carriers as rapidly as planned and resistance to their value quickly disappeared as they proved their usefulness defending convoys, providing air support for amphibious operations, and allowing fleet carriers to focus on offensive air-strike missions. Unlike most other large warships since HMS Dreadnought, the Casablanca-class ships were equipped with uniflow reciprocating engines instead of steam turbines. This was done because of bottlenecks in the gear-cutting industry, but greatly limited their usefulness after the war.

## Service

Although designated as convoy escort carriers, the Casablanca class was far more frequently used in large fleet amphibious operations, where speed was less important and their small airgroups could combine to provide the effectiveness of a much larger ship.
Their finest hour came in the Battle off Samar, when Taffy 3, a task unit composed of six of these ships and their screen of three destroyers and four destroyer escorts gave battle against the Japanese main battle force ("Center Force"). Their desperate defense not only preserved most of their own ships, but succeeded in turning back the massive force with only their aircraft joined by aircraft from Taffy 1 and 2 comprised additional Casablanca-class carriers, machine guns, torpedoes, depth charges, high-explosive bombs, and their own 5-inch/38-caliber guns. Tasked with ground support and antisubmarine patrols, they lacked the torpedoes and armor-piercing bombs to tackle a surface fleet alone. Taffy 3 was to be protected by Admiral Halsey's Third Fleet with carriers and battleships. But the Third Fleet had left the scene to pursue a decoy carrier fleet, inadvertently leaving Taffy 3 the only force between the massive Japanese fleet and undefended landing forces at Leyte Gulf. The lightly armed vessels each had only one 5-inch/38 cal gun mounted aft, yet two of their number, St. Lo and Kalinin Bay, became the only US aircraft carriers to ever record a hit on an enemy warship by its own guns. St. Lo hit a Japanese destroyer with a single round and Kalinin Bay damaged a Myōkō-class cruiser with two hits. In addition, the gun crew on USS White Plains may have struck the cruiser Chōkai, with up to six 5-inch shells. One of these rounds may even have caused a large secondary explosion – probably from one of Chōkai's own torpedoes – on the starboard side that proved fatal to the heavy cruiser. White Plains's gun crew claimed to have put all six 5-inch rounds into Chōkai from a range of 11,700 yards (10,700 m), near the maximum effective range for the 5-inch/38 gun. However, Japanese sources attributed the loss of Chōkai to bomb damage from an air attack.
Another noteworthy achievement of the Casablanca class was when USS Guadalcanal, under command of Captain Daniel V. Gallery, participated in the first capture-at-sea of a foreign warship by the US Navy since the War of 1812 when a crew of volunteers from USS Pillsbury boarded U-505 after Gallery's Guadalcanal-centered hunter-killer group forced it to the surface with depth charges. Guadalcanal also earned the distinction of being the only aircraft carrier in history to conduct flight operations with a captured enemy vessel in tow.

## Notable incidents

Of the eleven United States aircraft carriers of all types lost during World War II, six were escort carriers, five of which were of the Kaiser-built Casablanca class:
* CVE-56 Liscome Bay
Sunk 24 November 1943. Submarine torpedo launched from IJN I-175 SW off Butaritari (Makin).
* CVE-73 Gambier Bay
Sunk 25 October 1944. Concentrated surface gunfire from IJN Center Force during Battle off Samar.
* CVE-63 St. Lo (ex-Midway ex-Chapin Bay)
Sunk 25 October 1944. Kamikaze aerial attack during Battle of Leyte Gulf.
* CVE-79 Ommaney Bay
Sunk 4 January 1945. Kamikaze aerial attack in the Sulu Sea en route to Lingayen Gulf.
* CVE-95 Bismarck Sea
Sunk 21 February 1945. Kamikaze aerial attack off Iwo Jima.
* CVE-96 Anguilla Bay renamed USS Salamaua
Damaged at Lingayen Gulf on 6 January 1945 after kamikaze with two 551-pound (250 kg) bombs hit her flight deck. She was repaired and put back in service.

## Post war

Some ships were retained postwar as aircraft transports, where their lack of speed was not a major drawback. Some units were reactivated as helicopter escort carriers (CVHE and T-CVHE) or utility carriers (CVU and T-CVU) after the war, but most were deactivated and placed in reserve once the war ended, stricken in 1958-9 and scrapped in 1959–61. One ship, USS Thetis Bay, was heavily modified into an amphibious assault ship (LPH-6), but was scrapped in 1966.
Originally, half of their number were to be transferred to the Royal Navy under Lend-Lease, but instead they were retained in the US Navy and the Batch II Bogue-class escort carriers were transferred instead as the Ruler class (the RN's Batch I Bogues were the Attacker class).

## Ships of the class

All ships of the Casablanca class were built in Vancouver, Washington, by the Kaiser Shipbuilding Company. The following ships of the class were constructed.
List of Casablanca-class escort carriers :
| Ship name | Hull no. | Building Way | Laid down | Launched | Commissioned | Decommissioned | Fate |
| Casablanca (ex-Ameer, ex- Alazon Bay) | CVE-55 | 7 | 3 November 1942 | 5 April 1943 | 8 July 1943 | 10 June 1946 | Sold for scrapping, 23 April 1947 |
| Liscome Bay | CVE-56 | 8 | 12 December 1942 | 19 April 1943 | 7 August 1943 | 24 November 1943 | Torpedoed and sunk by Japanese submarine I-175, 24 November 1943 |
| Anzio (ex-Alikula Bay, ex-Coral Sea) | CVE-57 | 9 | 12 December 1942 | 1 May 1943 | 27 August 1943 | 5 August 1946 | Struck, 1 March 1959, sold for scrapping, 24 November 1959 |
| Corregidor (ex-Auguilla Bay) | CVE-58 | 10 | 17 December 1942 | 12 May 1943 | 31 August 1943 | 30 July 1946 | Sold for scrapping, 28 April 1959 |
| Corregidor (ex-Auguilla Bay) | CVE-58 | 10 | 17 December 1942 | 12 May 1943 | 19 May 1951 | 4 September 1958 | Sold for scrapping, 28 April 1959 |
| Mission Bay | CVE-59 | 11 | 28 December 1942 | 26 May 1943 | 13 September 1943 | 21 February 1947 | Sold for scrapping, 30 April 1959 |
| Guadalcanal (ex-Astrolabe Bay) | CVE-60 | 12 | 5 January 1943 | 5 June 1943 | 25 September 1943 | 15 July 1946 | Struck, 27 May 1958, sold for scrapping, 2 September 1959 |
| Manila Bay (ex-Bucareli Bay) | CVE-61 | 1 | 15 January 1943 | 10 July 1943 | 5 October 1943 | 31 July 1946 | Struck, 27 May 1958, sold for scrapping, 2 September 1959 |
| Natoma Bay | CVE-62 | 2 | 17 January 1943 | 20 July 1943 | 14 October 1943 | 20 May 1946 | Struck, 1 September 1958, sold for scrapping, 30 July 1959 |
| St. Lo (ex-Chapin Bay, ex-Midway) | CVE-63 | 3 | 23 January 1943 | 17 August 1943 | 23 October 1943 | 25 October 1944 | Sunk by kamikaze aircraft, 25 October 1944, during the Battle of Leyte |
| Tripoli (ex-Didrickson Bay) | CVE-64 | 4 | 1 February 1943 | 13 July 1943 | 31 October 1943 | 22 May 1946 | Struck, 1 February 1959, sold for scrapping, January 1960 |
| Tripoli (ex-Didrickson Bay) | CVE-64 | 4 | 1 February 1943 | 13 July 1943 | 5 January 1952 | 25 November 1958 | Struck, 1 February 1959, sold for scrapping, January 1960 |
| Wake Island (ex-Dolomi Bay) | CVE-65 | 5 | 6 February 1943 | 15 September 1943 | 7 November 1943 | 5 April 1946 | Struck, 17 April 1946, sold for scrapping, 19 April 1946 |
| White Plains (ex-Elbour Bay) | CVE-66 | 6 | 11 February 1943 | 27 September 1943 | 15 November 1943 | 10 July 1946 | Struck, 1 July 1958, sold for scrapping, 29 July 1958 |
| Solomons (ex-Emperor, ex-Nassuk Bay) | CVE-67 | 7 | 19 March 1943 | 6 October 1943 | 21 November 1943 | 5 June 1946 | Sold for scrapping, 22 December 1946 |
| Kalinin Bay | CVE-68 | 8 | 26 April 1943 | 15 October 1943 | 27 November 1943 | 15 May 1946 | Sold for scrapping, 8 December 1946 |
| Kasaan Bay | CVE-69 | 9 | 11 May 1943 | 24 October 1943 | 4 December 1943 | 5 June 1946 | Sold for scrapping, 2 February 1960 |
| Fanshaw Bay | CVE-70 | 10 | 18 May 1943 | 1 November 1943 | 9 December 1943 | 14 August 1946 | Struck, 1 March 1959, sold for scrapping, 2 February 1960 |
| Kitkun Bay | CVE-71 | 11 | 18 June 1943 | 8 November 1943 | 15 December 1943 | 19 April 1946 | Sold for scrapping, 18 November 1946 |
| Tulagi (ex-Fortazela Bay) | CVE-72 | 12 | 7 June 1943 | 15 November 1943 | 21 December 1943 | 30 April 1946 | Struck, 8 May 1946 |
| Gambier Bay | CVE-73 | 1 | 10 July 1943 | 22 November 1943 | 28 December 1943 | 27 November 1944 | Sunk, 25 October 1944, in the Battle off Samar |
| Nehenta Bay | CVE-74 | 2 | 20 July 1943 | 28 November 1943 | 3 January 1944 | 15 May 1946 | Struck 1 April 1960, sold for scrapping, 29 June 1960 |
| Hoggatt Bay | CVE-75 | 3 | 17 August 1943 | 4 December 1943 | 11 January 1944 | 20 July 1946 | Struck 1 April 1960, sold for scrapping, 31 March 1960 |
| Kadashan Bay | CVE-76 | 4 | 2 September 1943 | 11 December 1943 | 18 January 1944 | 14 June 1946 | Struck 1 August 1959, sold for scrapping, February 1960 |
| Marcus Island (ex-Kanalku Bay) | CVE-77 | 5 | 15 September 1943 | 16 November 1943 | 26 January 1944 | 12 December 1946 | Sold for scrapping, 29 February 1960 |
| Savo Island (ex-Kaita Bay) | CVE-78 | 6 | 27 September 1943 | 22 December 1943 | 3 February 1944 | 12 December 1946 | Struck 1 September 1959, sold for scrapping, 29 February 1960 |
| Ommaney Bay | CVE-79 | 7 | 6 October 1943 | 29 December 1943 | 11 February 1944 | 4 January 1945 | Damaged by kamikaze aircraft and scuttled, 4 January 1945 |
| Petrof Bay | CVE-80 | 8 | 15 October 1943 | 5 January 1944 | 18 February 1944 | 31 July 1955 | Struck 27 June 1958, sold for scrapping, 30 July 1959 |
| Rudyerd Bay | CVE-81 | 9 | 24 October 1943 | 12 January 1944 | 25 February 1944 | 11 June 1946 | Struck 1 August 1959, sold for scrapping, January 1960 |
| Saginaw Bay | CVE-82 | 10 | 1 November 1943 | 19 January 1944 | 2 March 1944 | 19 June 1946 | Struck 1 March 1959, sold for scrapping, 27 November 1959 |
| Sargent Bay | CVE-83 | 11 | 8 November 1943 | 31 January 1944 | 9 March 1944 | 23 June 1946 | Struck 27 June 1958, sold for scrapping, July 1959 |
| Shamrock Bay | CVE-84 | 12 | 15 November 1943 | 4 February 1944 | 15 March 1944 | 6 July 1946 | Struck 27 June 1958, sold for scrapping, May 1958 |
| Shipley Bay | CVE-85 | 1 | 22 November 1943 | 12 February 1944 | 21 March 1944 | 28 June 1946 | Struck 1 March 1959, sold for scrapping, 2 October 1959 |
| Sitkoh Bay | CVE-86 | 2 | 23 November 1943 | 19 February 1944 | 28 March 1944 | 30 November 1946 | Struck 1 April 1960, sold for scrapping, 30 August 1960 |
| Sitkoh Bay | CVE-86 | 2 | 23 November 1943 | 19 February 1944 | 29 July 1950 | 27 July 1954 | Struck 1 April 1960, sold for scrapping, 30 August 1960 |
| Steamer Bay | CVE-87 | 3 | 4 December 1943 | 26 February 1944 | 4 April 1944 | 4 February 1946 | Struck 1 March 1959, sold for scrapping, 29 August 1959 |
| Cape Esperance (ex-Tananek Bay) | CVE-88 | 4 | 11 December 1943 | 3 March 1944 | 9 April 1944 | 22 August 1946 | Sold for scrapping, 14 May 1959 |
| Cape Esperance (ex-Tananek Bay) | CVE-88 | 4 | 11 December 1943 | 3 March 1944 | 5 August 1950 | 15 January 1959 | Sold for scrapping, 14 May 1959 |
| Takanis Bay | CVE-89 | 5 | 16 December 1943 | 10 March 1944 | 15 April 1944 | 18 June 1946 | Struck 1 March 1959, sold for scrapping, 29 June 1960 |
| Thetis Bay | CVE-90 | 6 | 22 December 1943 | 16 March 1944 | 12 April 1944 | 7 August 1946 | Struck 1 August 1959, sold for scrapping, December 1964 |
| Thetis Bay | CVE-90 | 6 | 22 December 1943 | 16 March 1944 | 20 July 1956 | 1 March 1964 | Struck 1 August 1959, sold for scrapping, December 1964 |
| Makassar Strait | CVE-91 | 7 | 29 December 1943 | 22 March 1944 | 27 April 1944 | 9 August 1946 | Struck 1 September 1958, grounded and used as a target, April 1961 |
| Windham Bay | CVE-92 | 8 | 5 January 1944 | 29 March 1944 | 3 May 1944 | 23 August 1946 | Struck 1 February 1959, sold for scrapping, 31 December 1960 |
| Windham Bay | CVE-92 | 8 | 5 January 1944 | 29 March 1944 | 28 October 1950 | 15 January 1959 | Struck 1 February 1959, sold for scrapping, 31 December 1960 |
| Makin Island | CVE-93 | 9 | 12 January 1944 | 5 April 1944 | 9 May 1944 | 19 April 1946 | Struck 11 July 1946, sold for scrapping, 1 January 1947 |
| Lunga Point (ex-Alazon Bay) | CVE-94 | 10 | 19 January 1944 | 11 April 1944 | 14 May 1944 | 24 October 1946 | Struck 1 April 1960, sold for scrapping, 3 August 1960 |
| Bismarck Sea (ex-Alikula Bay) | CVE-95 | 11 | 31 January 1944 | 17 April 1944 | 20 May 1944 | 30 March 1945 | Sunk during the Battle of Iwo Jima, 21 February 1945 |
| Salamaua (ex-Anguilla Bay) | CVE-96 | 12 | 4 February 1944 | 22 April 1944 | 26 May 1944 | 9 May 1946 | Struck 21 May 1946, sold for scrapping, 18 November 1946 |
| Hollandia (ex-Astrolabe Bay) | CVE-97 | 1 | 12 February 1944 | 28 April 1944 | 1 June 1944 | 17 January 1947 | Struck 1 April 1960, sold for scrapping, 31 December 1960 |
| Kwajalein (ex-Bucareli Bay) | CVE-98 | 2 | 19 February 1944 | 4 May 1944 | 7 June 1944 | 16 August 1946 | Struck 1 April 1960, sold for scrapping |
| Admiralty Islands (ex-Chaplin Bay) | CVE-99 | 3 | 26 February 1944 | 10 May 1944 | 13 June 1944 | 24 April 1946 | Struck 8 May 1946, sold for scrapping, 2 January 1947 |
| Bougainville | CVE-100 | 4 | 3 March 1944 | 16 May 1944 | 18 June 1944 | 3 November 1946 | Struck 1 May 1960, sold for scrapping, 29 August 1960 |
| Matanikau (ex-Dolomi Bay) | CVE-101 | 5 | 10 March 1944 | 22 May 1944 | 24 June 1944 | 11 October 1946 | Struck 1 April 1960, sold for scrapping, 27 July 1960 |
| Attu (ex-Elbour Bay) | CVE-102 | 6 | 16 March 1944 | 27 May 1944 | 30 June 1944 | 8 June 1946 | Struck 3 July 1946, sold for scrapping, 3 January 1947 |
| Roi (ex-Alava Bay) | CVE-103 | 7 | 22 March 1944 | 2 June 1944 | 6 July 1944 | 9 May 1946 | Struck 21 May 1946, sold for scrapping, 31 December 1946 |
| Munda (ex-Tonowek Bay) | CVE-104 | 8 | 29 March 1944 | 27 May 1944 | 8 July 1944 | 24 April 1946 | Struck 1 September 1958, sold for scrapping, 17 June 1960 |