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Japanese Aircraft Carrier Time Operational

Editor's Note: The following content is a transcription of a period document or a collection of period statistics. It may be incomplete, inaccurate, or biased. The reader may not wish to take the content as factual.

 Commission DateFirst Operational DateEnd of Service DateMo. To Becoming OperationalTotal Mo. Since First OperationalTotal Mo. OperationalMo. Repair For Combat DamageMo. Refit, Overhaul, & in ReservePct Time Since First OperationalPct Time Repair DamagePct Time Refit, Overhaul, & in Reserve

Fleet (CV) and Light (CVL) Carriers
Hosho (Hosyo) CVL27-Dec-22 07-Dec-41 02-Sep-45 --44.844.80.00.0100%0%0%
Akagi CV25-May-27 07-Dec-41 05-Jun-42 --
Kaga CV30-Nov-29 07-Dec-41 05-Jun-42 --
Ryujo (Ryuzyo, Rjudzo) CVL09-May-33 07-Dec-41 24-Aug-42 --
Soryu CV29-Sep-37 07-Dec-41 04-Jun-42 --
Hiryu CV05-Jul-39 07-Dec-41 05-Jun-42 --
Zuiho CVL27-Dec-40 07-Dec-41 25-Oct-44 --34.630.62.02.088%6%6%
Shokaku (Syokaku) CV08-Aug-41 07-Dec-41 19-Jun-44 --30.423.45.02.077%16%7%
Zuikaku CV25-Sep-41 07-Dec-41 25-Oct-44 --34.630.62.02.088%6%6%
Shoho CVL30-Nov-41 04-Feb-4206-May-42
Junyo (Hayataka) CV03-May-42 19-May-4202-Sep-45 0.539.525.511.03.065%28%8%
Hiyo (Hitaka, Haytaka, Hijo) CV31-Jul-42 04-Oct-4220-Jun-44 2.120.514.56.00.071%29%0%
Ryuho (Rjuho) CVL28-Nov-42 11-Dec-4202-Sep-45 0.432.724.78.00.076%24%0%
Chiyoda CVL21-Dec-43 29-Jan-4425-Oct-44
Chitose CVL01-Nov-43 11-Jan-4425-Oct-44
Taiho CV07-Mar-44 28-Mar-4419-Jun-44
Unryu (Unrju) CV06-Aug-44 26-Sep-4419-Dec-44
Amagi CV10-Aug-44 15-Jan-4527-Jul-45
Katsuragi CV15-Oct-44 15-Feb-4502-Sep-45
Shinano CV19-Nov-44 28-Nov-4429-Nov-44

Escort Carriers (CVE)
Taiyo (Toiyo, Utaka, Taijo) CVE15-Sep-41 06-Dec-41 14-Aug-44 2.732.325.33.04.078%9%12%
Unyo (Un'yo, Otaka) CVE31-May-42 29-Jul-42 17-Sep-44 1.925.719.75.01.077%19%4%
Chuyo CVE25-Nov-42 12-Dec-42 04-Dec-43 0.611.711.70.00.0100%0%0%
Kaiyo CVE23-Nov-43 10-Dec-43 09-Aug-45 0.620.
Shinyo (Jinyo, Shingo) CVE15-Nov-43 13-Jul-44 17-Nov-44


Names in parentheses are alternate names or spellings used in other sources.

Being "operational" means having completed shakedown trials, embarked aircraft, and not being repaired for combat damage or being overhauled or refitted.

Operational times begin at 7 December 1941 for carriers commissioned before then.

Operational times end at 2 September 1945 for carriers still in service at that time.

"Total Mo. Since 1st Operational" is the number of months that elapsed between being commissioned as an aircraft carrier and becoming operational for the first time.

The total number of months between first becoming operational and the end of service is divided into months "operational", under repair, or being refitted, etc. ww2dbase

Richard Frank (1990). Guadalcanal- The Definitive Account of the Landmark Battle.
Jonathan Parshall & Anthony Tully (2005). Shattered Sword- The Untold Story of the Battle of Midway.
Francis Pike (2019). Hirohito's War- The Pacific War 1941-1945.
Dictionary of American Naval Fighting Ships (hazegray.org/danfs)
Imperial Japanese Navy Page (combinedfleet.com)
Naval War In The Pacific, 1941-1945 (pacific.valka.cz)
Royal and Dominion Navy Warships (naval-history.net)

Added By:
Bob Bryant

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