Here is what I have found is the initial Japanese naval forces at Shanghai Aug. 11. 1937:
- 3rd Fleet : 20+ Warships 5 Transports at Shanghai [1, 3, M144]
- Rear Admiral Denshichi Okawachi
– Izumo
- 11th Gunboat Division - Rear Admiral Tanimoto Umataro **, [M144]
-- flagship Yaeyama, Hozu, Futami and Kotaka from Hankow
--Katada, Sumida and Kuri in Shanghai
--Tsuga from Nanking,
--Hasu from Wuhu,
--Atami from Kiukiang,
--Seta from Changsha,
--Toba from Ichang,
--Hira from Chungking
- 8th Sentai Cruiser Division - Rear Admiral Nagumo
--(Kinu, Natori, Yura)
-1st Destroyer Sentai - Rear Admiral Yoshida
--(Sendai)
--- ships? Destroyer Group (Tai)
--- ships? Destroyer Group (Tai)
--- ships? Destroyer Group (Tai)
-- 1st Air Sentai - Rear Admiral Takasu
--- (Hosho) 26 aircraft capacity %1
----- Fighter Daitai - ? Nakajima A2N [3]
----- Bomber Daitai - ?
----- Attack Daitai - ?
--- (Ryujo) 48 aircraft capacity %1
---- ? aircraft?
----- Fighter Daitai - ? Nakajima A2N [3]
----- Bomber Daitai - ?
----- Attack Daitai - ?
--- 30th Destroyer Group
----(? ) 4 Destroyers
Third Fleet was assigned for over-all operations in China. Second Fleet was assigned to escort army transports. With the dispatch of troops to the Tsingtao area, the Second Fleet assumed responsibility for operations in North China waters, while the Third Fleet operated in Central and South China waters. These areas of operation were divided by the Lung-Hai railroad, starting from Hai-chou, and included the area of North China Operations.
By Oct. 29th 1937 my info is that the fleet looked like this:
3rd Fleet:– Vice Admiral Hasegawa
- (Izumo - flagship of 3rd Fleet)
- 8th Sentai - Rear Admiral Nagumo
--(Kinu, Natori, Yura)
- 9th Sentai - Rear Admiral Kobayashi
--(Myoko, Tama)
- 10th Sentai - Rear Admiral Shimomura
--(Tenryu, Tatsuta)
- 11th Sentai - Rear Admiral Tanimoto
-- 13 gunboats:
-- flagship Yaeyama, Hozu, Futami and Kotaka from Hankow,
-- Katada, Sumida and Kuri in Shanghai,
-- Tsuga from Nanking,
-- Hasu from Wuhu,
-- Atami from Kiukiang,
-- Seta from Changsha,
-- Toba from Ichang,
-- Hira from Chungking
- 1st Destroyer Sentai - Rear Admiral Yoshida
--(Sendai)
--- ? Destroyer Group (Tai) 4 Destroyers
--- ? Destroyer Group (Tai) 4 Destroyers
--- ? Destroyer Group (Tai) 4 Destroyers
- 3rd Destroyer Sentai - Rear Admiral Kondo
-- (Kitakami)
--- ? Destroyer Group (Tai) 4 Destroyers
--- ? Destroyer Group (Tai) 4 Destroyers
--- ? Destroyer Group (Tai) 4 Destroyers
- 5th Destroyer Sentai - Rear Admiral Okuma
-- (Yubari)
--- 16th Destroyer Group (Tai) 4 Destroyers
--- ? Destroyer Group (Tai) 4 Destroyers
-1st Submarine Sentai - Rear Admiral Komatsu
--(Isuzu)and 2 submarine groups) Subs: #'s I-1, I-3, I-4 , I-5, I-6 , ?
-- 7th Submarine Group (Tai) - Cdr;Cpt.Mito Hisashi; [Taki / PWf]
--- ?
-- 8th Submarine Group (Tai) - Cpt.Akiyama Katsuzo; [Taki / PWf]
-- ?
- 1st Minesweeper Group (Tai)
-- ?
- 11th Minesweeper Group (Tai)
-- ?
Plus the Naval part of the Special Air Group supporting the action in Shanghai:
-- 12th Sentai - Rear Admiral Miyata
---(Okinoshima)
---(Kamoi[seaplane tender])
---- 12 NAKAJIMA TYPE 95 RECON SEAPLANE (E8N1-DAVE)
--- 28th Destroyer Group
---- ( ?) 4 Destroyers
-- 1st Air Sentai - Rear Admiral Takasu
--- (Hosho) 26 aircraft capacity %1
----- Fighter Daitai - ? Nakajima A2N [3]
----- Bomber Daitai - ?
----- Attack Daitai - ?
--- (Ryujo) 48 aircraft capacity %1
---- ? aircraft?
----- Fighter Daitai - ? Nakajima A2N [3]
----- Bomber Daitai - ?
----- Attack Daitai - ?
--- 30th Destroyer Group
----(? ) 4 Destroyers
-- 2nd Air Sentai - Rear Admiral Horie
--- (Kaga) 90 aircraft capacity [%1]
----- Fighter daitai - 16 Nakajima A2N , ? Type 95 Mitsubishi A5M )[3]
---- Bomber Daitai - 14 carrier bombers (Aichi D1A1s, A2's)
---- Attack daitai - 22 Mitsubishi B2M, ? Type 96 Yokosuka B4Y1 Torpedo bomber [3]
--- 22nd Destroyer Group
---- (? )4 Destroyers
Notes:
% Air group was temporarily formed and attached to 3rd Fleet.
%1 1http://homepage2.nifty.com/nishidah/e/stc0201.htm 26 plane capacity.
Sources:
[1] Hsu Long-hsuen and Chang Ming-kai, History of The Sino-Japanese War (1937-1945) 2nd Ed. ,1971. Translated by Wen Ha-hsiung , Chung Wu Publishing; 33, 140th Lane, Tung-hwa Street, Taipei, Taiwan Republic of China.
Named Japanese ships at Shanghai :
Fleet HQ: Izumo , Notoro. Shanghai SNLF
1st Task Force (Syake flag), (10 Gunboats, Tenryu, Hirado, Togiwa, Zushima, and 5 Destroyers )
3rd Squadron (Naka F), Yura
1st Torpedo Squadron: (Yubari; flagship)
1st Aviation Squadron - (Kaga; flag) Housho and 4 destroyers
[3] Sino-Japanese Air War 1937-45
http://surfcity.kund.dalnet.se/sino-japanese.htm
[M144] Monograph 144 Chapter II
http://www.ibiblio.org/pha/monos/144/14 ... 20Incident
[PWf] Forum: Pacific War 1941-1945, discussion about Shanghai Defense force Aug. 11 1937
http://f16.parsimony.net/forum27947/messages/6197.htm