World War II Database

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.

ww2dbase

	Commission Date	First Operational Date	End of Service Date	Mo. To Becoming Operational	Total Mo. Since First Operational	Total Mo. Operational	Mo. Repair For Combat Damage	Mo. Refit, Overhaul, & in Reserve	Pct Time Since First Operational	Pct Time Repair Damage	Pct Time Refit, Overhaul, & in Reserve
Fleet (CV) and Light (CVL) Carriers
Hosho (Hosyo) CVL	27-Dec-22	07-Dec-41	02-Sep-45	--	44.8	44.8	0.0	0.0	100%	0%	0%
Akagi CV	25-May-27	07-Dec-41	05-Jun-42	--	5.9	5.9	0.0	0.0	100%	0%	0%
Kaga CV	30-Nov-29	07-Dec-41	05-Jun-42	--	5.9	3.9	2.0	0.0	66%	34%	0%
Ryujo (Ryuzyo, Rjudzo) CVL	09-May-33	07-Dec-41	24-Aug-42	--	8.5	7.5	0.0	1.0	88%	0%	12%
Soryu CV	29-Sep-37	07-Dec-41	04-Jun-42	--	5.9	5.9	0.0	0.0	100%	0%	0%
Hiryu CV	05-Jul-39	07-Dec-41	05-Jun-42	--	5.9	5.9	0.0	0.0	100%	0%	0%
Zuiho CVL	27-Dec-40	07-Dec-41	25-Oct-44	--	34.6	30.6	2.0	2.0	88%	6%	6%
Shokaku (Syokaku) CV	08-Aug-41	07-Dec-41	19-Jun-44	--	30.4	23.4	5.0	2.0	77%	16%	7%
Zuikaku CV	25-Sep-41	07-Dec-41	25-Oct-44	--	34.6	30.6	2.0	2.0	88%	6%	6%
Shoho CVL	30-Nov-41	04-Feb-42	06-May-42	2.2	3.0	3.0	0.0	0.0	100%	0%	0%
Junyo (Hayataka) CV	03-May-42	19-May-42	02-Sep-45	0.5	39.5	25.5	11.0	3.0	65%	28%	8%
Hiyo (Hitaka, Haytaka, Hijo) CV	31-Jul-42	04-Oct-42	20-Jun-44	2.1	20.5	14.5	6.0	0.0	71%	29%	0%
Ryuho (Rjuho) CVL	28-Nov-42	11-Dec-42	02-Sep-45	0.4	32.7	24.7	8.0	0.0	76%	24%	0%
Chiyoda CVL	21-Dec-43	29-Jan-44	25-Oct-44	1.3	8.9	7.9	0.0	1.0	89%	0%	11%
Chitose CVL	01-Nov-43	11-Jan-44	25-Oct-44	2.3	9.5	9.5	0.0	0.0	100%	0%	0%
Taiho CV	07-Mar-44	28-Mar-44	19-Jun-44	0.7	2.7	2.7	0.0	0.0	100%	0%	0%
Unryu (Unrju) CV	06-Aug-44	26-Sep-44	19-Dec-44	1.7	2.8	2.8	0.0	0.0	100%	0%	0%
Amagi CV	10-Aug-44	15-Jan-45	27-Jul-45	5.2	6.3	2.3	4.0	0.0	37%	63%	0%
Katsuragi CV	15-Oct-44	15-Feb-45	02-Sep-45	4.6	6.0	0.0	6.0	0.0	0%	100%	0%
Shinano CV	19-Nov-44	28-Nov-44	29-Nov-44	0.3	0.0	0.0	0.0	0.0	100%	0%	0%
Average	20			1.1	15.4	12.6	2.3	0.6	82%	15%	4%
Escort Carriers (CVE)
Taiyo (Toiyo, Utaka, Taijo) CVE	15-Sep-41	06-Dec-41	14-Aug-44	2.7	32.3	25.3	3.0	4.0	78%	9%	12%
Unyo (Un'yo, Otaka) CVE	31-May-42	29-Jul-42	17-Sep-44	1.9	25.7	19.7	5.0	1.0	77%	19%	4%
Chuyo CVE	25-Nov-42	12-Dec-42	04-Dec-43	0.6	11.7	11.7	0.0	0.0	100%	0%	0%
Kaiyo CVE	23-Nov-43	10-Dec-43	09-Aug-45	0.6	20.0	16.0	3.0	1.0	80%	15%	5%
Shinyo (Jinyo, Shingo) CVE	15-Nov-43	13-Jul-44	17-Nov-44	7.9	4.2	4.2	0.0	0.0	100%	0%	0%
Average	5			2.7	18.8	15.4	2.2	1.2	82%	12%	6%

Notes

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

Source(s):
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)
Wikipedia

Added By:
Bob Bryant

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