Independence-class aircraft carrier

For the class of littoral combat ships, see Independence-class littoral combat ship.
USS San Jacinto on a training cruise off the east coast in 1944
Class overview
Builders: New York Shipbuilding
Operators:
Succeeded by: Saipan-class aircraft carrier
Completed: 9
Lost: 1
Retired: 8
Preserved: 0
General characteristics
Type: Light aircraft carrier
Displacement: 11,000 tons (standard)
Length: 622 ft 6 in (190 m)
Beam:
  • 71 ft 6 in (21.8 m) hull
  • 109 ft 2 in (33.3 m) over flight deck and projections
Propulsion:
  • steam turbines
  • four propellers
  • 100,000 horsepower (75 MW)
Speed: 31.5 knot (58 km/h) maximum
Aircraft carried:

The Independence-class aircraft carriers were a class of light carriers built for the United States Navy that served during World War II.

Adapted from the design for Cleveland-class light cruisers, this class of ship resulted from the interest of President Franklin D. Roosevelt in naval air power. With war looming, the former Secretary of the Navy noted no new fleet aircraft carriers were expected to be completed before 1944.[1] He proposed to convert some of the many cruisers then under construction to carriers. Studies of cruiser-size aircraft carriers had shown the type had serious limitations, and on 13 October 1941, the General Board of the United States Navy replied that such a conversion showed too many compromises to be effective.

Undeterred, President Roosevelt ordered another study. On 25 October 1941, BuShips reported that the cruiser conversion aircraft carrier would result in a vessel of lesser capability, but they would be available much sooner.[2] Following the December 1941 Pearl Harbor attack the need for more carriers became urgent. In January 1942, the Navy responded by greatly accelerating construction of the 34,000 ton Essex class aircraft carriers, and ordering the conversion of a Cleveland-class light cruiser then under construction to completion as a light aircraft carrier, becoming the USS Belleau Wood (CVL-24).

Development

Plans developed for this conversion showed much more promise than expected. The escort carrier design drew on the Sangamon class of conversions, in that instance from oiler hulls.[3] Two more light cruisers were reordered as carriers in February, three in March and a final three in June 1942. The Independence class design featured a relatively short and narrow flight deck and hangar, with a small island. The hangar, flight deck and island represented a significant increase in the ship's topside weight. To compensate for this blisters were added to the original cruiser hull, which increased the original beam by five feet. The vessel carried a small air group of about 30 aircraft, originally intended to include nine each of fighters, scout-bombers and torpedo planes, but later reoriented to number about two dozen fighters and nine torpedo bombers.

These were limited-capability ships, whose principal virtue was near-term availability. Their limited size made for seakeeping difficulties in the many typhoons of the Pacific, and their small flight decks led to a relatively high aircraft accident rate. However, being based on a light cruiser, they were fast ships, much faster than the Casablanca class escort carriers. The cruiser hull and engineering allowed them the speed necessary to operate with the main fleet carrier task groups.

Service

Completed in the course of 1943, and coming into service with the first eight of the Essex-class carriers, the nine Independence-class ships made up a vital component of the Fast Carrier Task Force, which carried the Navy's offensive through the central and western Pacific from November 1943 through August 1945. Eight of these carriers participated in the Battle of the Philippine Sea in June 1944, which effectively ended Japan's carrier air power. The light carriers provided 40 percent of the Fast Carrier Task Force's fighters and 36 percent of the torpedo bombers. The protection on these carriers was modest, and munitions often had to be stowed at the hangar level, a factor that contributed greatly to the loss of Princeton in October 1944.

Ships in class

USS Princeton CVL-23
USS Belleau Wood CVL-24
USS Cowpens CVL-25
USS Monterey CVL-26

The nine ships of the Independence-class were all converted from Cleveland class light cruisers building at the New York Shipbuilding Corporation shipyard, Camden, New Jersey. Initially classified as "aircraft carriers" (CV), all were re-designated "small aircraft carriers" (CVL) on 15 July 1943, while four ships were still under construction.

Name Hull number Builder Laid down Launched Commissioned Fate
Independence
(ex-Amsterdam)		 CVL-22 New York Shipbuilding Corporation 1 May 1941 22 August 1942 14 January 1943 Used as target in Operation Crossroads, 1946
Scuttled off San Francisco, 1951
Princeton
(ex-Tallahassee)		 CVL-23 2 June 1941 18 October 1942 25 February 1943 Scuttled following air attack, 24 October 1944
Belleau Wood
(ex-New Haven)		 CVL-24 11 August 1941 6 December 1942 31 March 1943 Transferred to France as Bois Belleau, 1953
Cowpens
(ex-Huntington)		 CVL-25 17 November 1941 17 January 1943 28 May 1943 Broken up at Portland, 1960
Monterey
(ex-Dayton)		 CVL-26 29 December 1941 28 February 1943 17 June 1943 Broken up at Philadelphia, 1971
Langley
(ex-Fargo
ex-Crown Point)		 CVL-27 11 April 1942 22 May 1943 31 August 1943 Transferred to France as La Fayette, 1951
Cabot
(ex-Wilmington)		 CVL-28 16 March 1942 4 April 1943 24 July 1943 Transferred to Spain as Dédalo, 1967
Bataan
(ex-Buffalo)		 CVL-29 31 August 1942 1 August 1943 17 November 1943 Broken up at San Francisco, 1961
San Jacinto
(ex-Newark,
ex-Reprisal)		 CVL-30 26 October 1942 26 September 1943 15 November 1943 Broken up at Los Angeles, 1971

Disposal

Side by side comparisons: two fleet carriers from the outbreak of the war, the USS Saratoga and the USS Enterprise, moored near the Essex class USS Hornet. Beyond the Hornet is moored the USS San Jacinto.

There was little margin for growth, as the ships' post-war careers showed. Independence was expended as an atomic bomb target, and the rest were laid up in 1947. Five returned to service in 1948–53, two with the French Navy. Two were used as training carriers, while Bataan saw Korean War combat duty with Marine Corps air groups. She and Cabot received anti-submarine warfare modernisations in the early 1950s, emerging with two funnels instead of the original four. All but the French ships were decommissioned in 1954–56 and were reclassified as aircraft transports in 1959. Cabot got a new lease on life in 1967, when she became the Spanish Navy's carrier Dedalo, serving until 1989 (in Spanish service, she was the first carrier to regularly deploy the Harrier jump jet). Despite efforts to preserve her, Cabot was scrapped at Brownsville, TX starting in 1999 and ending in 2003. Preservation efforts continued until the hull was half scrapped.

See also

Media related to Independence class aircraft carrier at Wikimedia Commons

References

  1. ↑ Friedman, Norman U.S. Aircraft Carriers United States Naval Institute (1983) ISBN 0-87021-739-9 pp.412&413
  2. ↑ Friedman, p.182
  3. ↑ Friedman, p.182


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