1st Mobile Fleet (Imperial Japanese Navy)

The 1st Mobile Fleet (第一機動艦隊, Dai-Ichi Kidō Kantai) was a fleet of the Imperial Japanese Navy established during World War II.

1st Mobile Fleet
Active1 March 1943 – 15 November 1944
CountryEmpire of Japan
Branch Imperial Japanese Navy
Battle honoursPacific Theatre of World War II

Structure

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Task Force A, 1st Mobile Fleet during the Battle of the Philippine Sea on 20 June 1944
Date Higher Fleet Lower Fleets Divisions, Squadrons and attached elements
1 March 1944 (original) Combined Fleet 2nd Fleet 4th CruDiv., 5th CruDiv., 2nd CruDesron.
3rd Fleet 1st CarDiv., 2nd CarDiv., 3rd BatDiv., 7th CruDiv., 10th CruDesron.,
Aircraft carrier Chitose, Heavy cruiser Mogami, Light cruiser Ōyodo, 601st NAG
1 April 1944 2nd Fleet 4th CruDiv., 5th CruDiv., 7th CruDiv., 2nd CruDesron.
3rd Fleet 1st CarDiv., 2nd CarDiv., 3rd CarDiv., 3rd BatDiv., 10th CruDesron.,
Heavy cruiser Mogami, 601st NAG
1 May 1944 2nd Fleet 4th CruDiv., 5th CruDiv., 7th CruDiv., 2nd CruDesron.
3rd Fleet 1st CarDiv., 2nd CarDiv., 3rd CarDiv., 4th CarDiv., 3rd BatDiv., 10th CruDesron.,
Heavy cruiser Mogami, 601st NAG
10 July 1944 2nd Fleet 1st BatDiv., 4th CruDiv., 5th CruDiv., 7th CruDiv., 2nd CruDesron.
3rd Fleet 1st CarDiv., 3rd CarDiv., 4th CarDiv., 3rd BatDiv., 10th CruDesron.,
Heavy cruiser Mogami, 601st NAG
15 August 1944 2nd Fleet 1st BatDiv., 3rd BatDiv., 4th CruDiv., 5th CruDiv., 7th CruDiv., 2nd CruDesron.
3rd Fleet 1st CarDiv., 3rd CarDiv., 4th CarDiv., 10th CruDesron.,
Heavy cruiser Mogami, 601st NAG
15 October 1944 2nd Fleet 1st BatDiv., 2nd BatDiv., 3rd BatDiv., 4th CruDiv., 5th CruDiv., 7th CruDiv., 2nd CruDesron.
3rd Fleet 1st CarDiv., 3rd CarDiv., 4th CarDiv., 10th CruDesron.,
Heavy cruiser Mogami, 601st NAG
6th Fleet 7th Subron., 8th Subron., 11th Subron., 15th Subflotilla, 34th Subflotilla, Submarine I-12,
22nd CruDiv., 11th CruDesron., 31st CruDesron.,
Aircraft carrier Hōshō, Seaplane tender Akitsushima, Auxiliary submarine tender Tsukushi Maru,
No.30 Submarine Base Unit, No.31 Submarine Base Unit
15 November 1944 disbanded

Commanders

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Commander in chief

Rank Name Date Additional post
1 Vice-Admiral Jisaburō Ozawa 1 March 1944 Commander of the 3rd Fleet and the 1st Carrier Division
1 October 1944 Commander of the 3rd Fleet (and direct control for the 3rd Carrier Division)

Chief of staff

Rank Name Date Additional post
1 Rear-Admiral Keizō Komura 1 March 1944 Chief of staff of the 3rd Fleet
2 Rear-Admiral Sueo Ōbayashi 1 October 1944 Chief of staff of the 3rd Fleet

Bibliography

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  • The Maru Special series, "Ushio Shobō". (Japan)
  • Ships of the World series, "Kaijinsha"., (Japan)