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fighting ships of the world

IMPERIAL JAPANESE NAVY (JAPAN)

SUBMARINES

"Sen-Ho" aircraft support submarines (1945)

I351 1945

Name No Builder Laid down Launched Comp Fate
351 <I351>   Kure K K 5/1943 24/2/1944 1/1945 sunk 14/7/1945
352 <I352>   Kure K K 11/1943 23/4/1944 --- sunk incomplete 22/6/1945

  

Displacement standard, t

2650

Displacement normal, t

3512 / 4290

Length, m

107.0 pp 110.0 wl 111.0 oa

Breadth, m

10.2

Draught, m

6.14

No of shafts

2

Machinery

2 Kampon diesels / 2 electric motors

Power, h. p.

3700 / 1200

Max speed, kts

15.8 / 6.3

Fuel, t

diesel oil 120

Endurance, nm(kts) 13000(14) / 100(3)
Armament

2 x 3 - 25/60 96-shiki, 1 x 1 - 25/60 96-shiki, 4 x 1 - 76/12 mortars, 4 - 533 TT (bow,4)

Military load 365 t of aircraft fuel, 15 t of bombs and torpedoes, 11 t of fresh water

Sensors

13-go radar

Complement

77
Diving depth operational, m 90

Ship project history: Sen-Ho (Support submarine) type. Submarine replenishment tankers of Sen-Ho type were built for replenishment of large flying boats in the high sea. Each such tanker should carry up to 365t of aviation petrol, 15t of aviation ammunition (torpedoes and bombs) and 11t of fresh water. Simultaneously one submarine could supply 3 planes. Double-hulled, endurance was up to 60 days. Project provided artillery consisted from one 140mm/40 gun and 2 twin 25mm MGs, however at completion the gun instrument was replaced by two mortars. Under the 1942 program building of three submarines (I351-353) was provided, but actually navy received only lead I351. I352 at 90% availability 22/6/1945 was destroyed in Kure at of American Army aircraft. Order for I353, as well as for three more submarines of the additional 1942 program (Nos I-III), was cancelled in 1943.

Modernizations: None.

Naval service: I351 was sunk 14/7/1945 NE off Natuna Besar by American submarine Bluefish.

 

Ivan Gogin, 2008-14