Chitose-class aircraft carrier

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Japanese aircraft carrier Chitose cropped.jpg
Class overview
Name: Chitose class
Operators:  Imperial Japanese Navy
Completed: 2
Lost: 2
General characteristics
  • 11,190 long tons (11,370 t) standard
  • 13,431 long tons (13,647 t) trial
  • 15,300 long tons (15,500 t) full load
  • 174 m (570 ft 10 in) length between perpendiculars
  • 185.93 m (610 ft 0 in) waterline length
  • 192.5 m (631 ft 7 in) overall length
Beam: 20.8 m (68 ft 3 in) at waterline
Draught: 7.51 m (24 ft 8 in)
Installed power:
  • 56,800 shp (42,400 kW)
  • 4 boilers
Speed: 28.9 knots (53.5 km/h; 33.3 mph)
Range: 5,000 nmi (9,300 km; 5,800 mi)
Complement: 800
Aircraft carried: 30

The Chitose-class aircraft carriers (千歳型航空母艦, Chitose-gata kōkūbokan) were a class of two seaplane tenders, later converted to light aircraft carriers, of the Imperial Japanese Navy during World War II. Under the terms of the Washington Naval Treaty, the total tonnage of Japan's naval vessels was limited by class. The Chitose-class ships were built as seaplane tenders, designed to make the conversion to aircraft carriers relatively easy. They served as seaplane tenders during the early part of the Pacific War. After the Battle of Midway, they were converted into light aircraft carriers. Both ships participated in the Battle of the Philippine Sea and both were sunk in the Battle of Leyte Gulf.

Chitose (千歳) underwent conversion at the Sasebo Naval Yard and was completed in New Years Day, 1944. Her sister ship Chiyoda (千代田) was completed approximately two months earlier at the Yokosuka Naval Yard. Both ships were outfitted with a single hangar and they were widened by an additional 6 feet 7 inches (2.0 m). The added flight deck was serviced by two lifts.

Chitose and Chiyoda were sunk at the Battle of Cape Engano, which occurred during the Imperial Japanese Navy's "Sho-Go" operation that produced the Battle of Leyte Gulf. In charge of the operation was Vice Admiral Jisaburo Ozawa, commander of the operation's northern force. Ozawa's was a desperate mission—provide an attractive target for U.S. Admiral William F. Halsey's Third Fleet, hopefully pulling the powerful American "fast carriers" north so that Japanese surface ships could slip in and attack U.S. invasion forces off Leyte. His ships were not expected to survive their diversionary employment. Together with two other carriers in the group, they carried only 116 planes, much less than their normal capacity and far less than the aircraft of Halsey's task forces.

Chitose-class aircraft carrier under attack, 25 October 1944

Despite their role as "bait", the Japanese carriers sighted Halsey first and launched a strike in the late morning of 24 October. This accomplished nothing, and only a few planes returned to the carriers, leaving them with less than thirty. The Japanese ships tried hard to be conspicuous, and U.S. aircraft finally spotted them in mid-afternoon. Admiral Halsey, believing that his aviators had driven the other Japanese forces away, headed north to attack.

At about 08:00 on the morning of 25 October, American carrier planes began a series of attacks and sank Chitose. A second strike came in around 10:00 that damaged Chiyoda and slowed her down. She was later sunk by gunfire from four cruisers and nine destroyers under the command of Rear Admiral DuBose that had been detached from Halsey's Third Fleet to sail north and engage the Japanese.

(From a Presidential Citation-May 1945) Lieutenant, Junior Grade Donald McCutcheon U.S. Navy (Reserve), from Elisabeth, NJ received the Navy Cross for extraordinary heroism in operations against the enemy while serving as Pilot of a carrier- based Navy Dive Bomber in Bombing Squadron Fifteen (VB-15), embarked from the U.S.S. Essex (CV-9). Fearlessly pressing home his attack to low altitude in the face of accurate and intense antiaircraft fire from the formidable enemy disposition, Lieutenant, Junior Grade, McCutcheon succeeded in scoring a direct hit upon a Japanese aircraft carrier of Chitose class, causing certain damage to that enemy vessel. Undaunted in the face of relentless, devastating antiaircraft fire, he rendered gallant service during the bitterly fought engagement in which all carriers, a light cruiser and a destroyer of the enemy's task force were sunk and heavy bomb and torpedo damage inflicted on battleships and other important naval units. By his daring airmanship, exceptional courage and steadfast devotion to duty through a perilous assignment, Lieutenant, Junior Grade, McCutcheon contributed materially to the sinking of this valuable enemy fighting unit and upheld the highest traditions of the United States Naval Service.


Name Builder Laid Down Launched Commissioned Recommissioned Fate
Chitose (千歳) Kure Naval Arsenal 26 November 1934 29 November 1936 25 July 1938 1 November 1943 Sunk during the Battle of Cape Engaño, 25 October 1944
Chiyoda (千代田) 14 December 1936 19 November 1937 15 December 1938 21 December 1943

See also[edit]



  • Brown, J. D. (2009). Carrier Operations in World War II. Annapolis, Maryland: Naval Institute Press. ISBN 978-1-59114-108-2.
  • Jentschura, Hansgeorg; Jung, Dieter; Mickel, Peter (1977). Warships of the Imperial Japanese Navy, 1869–1945. Annapolis, Maryland: United States Naval Institute. ISBN 0-87021-893-X.
  • Polmar, Norman; Genda, Minoru (2006). Aircraft Carriers: A History of Carrier Aviation and Its Influence on World Events. Volume 1, 1909-1945. Washington, D.C.: Potomac Books. ISBN 1-57488-663-0.
  • Silverstone, Paul H. (1984). Directory of the World's Capital Ships. New York: Hippocrene Books. ISBN 0-88254-979-0.
  • Stille, Mark (2005). Imperial Japanese Navy Aircraft Carriers 1921–1945. New Vanguard. 109. Oxford, UK: Osprey Publishing. ISBN 1-84176-853-7.
  • Chesneau, Roger, ed. (1980). Conway's All the World's Fighting Ships 1922-1946. Greenwich: Conway Maritime Press. ISBN 0-85177-146-7.
  • Tully, Anthony P. (2001). "IJN Chitose: Tabular Record of Movement". Kido Butai. Retrieved 11 January 2013.
  • Tully, Anthony P. (1998). "IJN Chiyoda: Tabular Record of Movement". Kido Butai. Retrieved 11 January 2013.