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Japanese 1 Fleet

The main Japanese battle line was designated as 1 Fleet at the start of the Pacific War.  The Japanese Navy was intellectually committed to the concept of Decisive Battle, so much so that the battle line was perpetually held in reserve.

Administrative structure, 7 December 1941

1 Fleet (Takasu; at Hashirajima)
  AV Shinso Maru (10,000 tons)

Battleship Division 2 (Takasu)

  BB Hyuga


BB Ise


BB Fuso


BB Yamashiro

Battleship Division 3 (Mikawa)


BB Kongo (with Distant Cover Force)


BB Haruna (with Distant Cover Force)


BB Hiei (with Pearl Harbor Attack Force)


BB Kirishima (with Pearl Harbor Attack Force)

Cruiser Division 6 (Goto; at Chichi Jima with Guam Invasion Force)


CA Aoba


CA Kinugasa


CA Furutaka


CA Kako

Carrier Division 3 (Kuwabara; at Hashirajima)


CVL Hosho


  11 A5M Claude



8 B4Y Jean


CVL Zuiho



16 A5M Claude



12 B5N Kate


DD Yukaze


DD Minekaze

Destroyer Squadron 1 (Omori; at Hashirajima)


CL Abukuma (with Pearl Harbor Attack Force)


Destroyer Division 6



DD Akatsuki (with Distant Cover Force)



DD Hibiki (with Distant Cover Force)



DD Ikazuchi (with Hong Kong Force)



DD Inazumi (with Hong Kong Force)


Destroyer Division 17 (with Pearl Harbor Attack Force)



DD Hamakaze



DDIsokaze



DD Tanakaze



DD Urikaze


Destroyer Division 21 (patrolling the Sea of Japan)



DD Hatsuharu



DD Hatsushimo



DD Nenohi



DD Wakaba


Destroyer Division 27 (patrolling the Sea of Japan)



DD Ariake



DD Shiratsuyu



DD Shigure



DD Yugure

Destroyer Squadron 3 (Hashimoto; at Maizuru)


CL Sendai (with Khota Baharu Attack Force)


CL Kashii (with Main Body)


Destroyer Division 11 (with Main Body)



DD Fubuki



DD Hatsuyuki



DD Shirayuki



DD Sagiri


Destroyer Division 12



DD Murakumo (with Khota Baharu Attack Force)



DD Shinonome (with Khota Baharu Attack Force)



DD Shirakumo (with Khota Baharu Attack Force)



DD Usugumo (at Maizuru)


Destroyer Division 19



DD Isoname (with Singora Attack Force)



DD Ayaname (with Khota Baharu Attack Force)



DD Shikiname (with Khoto Baharu Attack Force)



DD Uranami (with Khota Baharu Attack Force)


Destroyer Division 20



DD Sagiri (with Main Body)



DD Amagiri (with Singora Attack Force)



DD Asagiri (with Singora Attack Force)



DD Yugiri (with Singora Attack Force)

Task forces, 7 December 1941

Guam Invasion Force (Goto; at Chichi Jima)      
  Cruiser Division 6 (Goto)

  CA Aoba


CA Kinugasa


CA Furutaka


CA Kako

Destroyer Division 23 From CarDiv2, 1 Air Fleet


DD Kikuzuki


DD Uzuki


DD Yuzuki

DD Oboro From CarDiv5, 1 Air Fleet

4 AM

2 PG

6 SC

AK Venice Maru (6571 tons, 11 knots)

8 AP

South Seas Detachment (Horii) Also designated 55 Regimental Group. Under direct command of Imperial General Headquarters.


144 Regiment


10 Engineer Regiment


15 Engineer Regiment


5 Sasebo SNLF


5 Yokosuka SNLF


References

Francillon (1979)

Morison (1948)

Prados (1995)



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