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fighting ships of the world

IMPERIAL JAPANESE NAVY (JAPAN)

SUBMARINES

"Kaidai 6b" attack submarines (1938)

I74 1938

Name No Yard No Builder Laid down Launched Comp Fate
74 <I74>, 5/1942- 174 <I174>     Sasebo K K 10/1934 28/3/1937 8/1938 sunk 12/4/1944
75 <I75>, 5/1942- 175 <I175>     Mitsubishi, Kobe 11/1934 16/9/1937 12/1938 sunk 4/2/1944

  

Displacement standard, t

1420

Displacement normal, t

1810 / 2564

Length, m

98.4 pp 102.6 wl 105.0 oa

Breadth, m

8.20

Draught, m

4.60

No of shafts

2

Machinery

2 Kampon diesels / 2 electric motors

Power, h. p.

9000 / 1800

Max speed, kts

23 / 8

Fuel, t

diesel oil 230

Endurance, nm(kts) 14000(10) / 65(3)
Armament

1 x 1 - 120/45 11-shiki, 1 x 2 - 13.2/76, 6 - 533 TA (4 bow, 2 stern, 14)

Sensors 93-shiki sonar, 93-shiki hydrophone

Complement

60 - 84

Diving depth operational, m

80

Ship project history: Kaidai 6b (Large Admiralty 6b) type. Built under 2nd Supplementary program of 1934. Repeated Kaidai 6a type and differed by some larger diving depth.

Modernizations: early 1943, I174: was converted to transport submarine; - 1 x 1 - 120/45, torpedoes stowage was decreased; + 1 14m Daihatsu-type landing craft and deck cargo

Naval service: I175 was sunk 4/2/1944 in Marshall Islands area by US destroyer Charette and escort destroyer Fair. I174 was sunk 12/4/1944 off Truk by US aircraft. 

I175

 

Ivan Gogin, 2008-14