NAVYPEDIA

Photo

I10  

Ships

Name	No	Yard No	Builder	Laid down	Launched	Comp	Fate
伊9 [I9]			Kure K K	1/1938	20.5.1939	2.1941	sunk 11.6.1944
伊10 [I10]			Kawasaki, Kobe	6/1938	20.9.1939	10.1941	sunk 4.7.1944
伊11 [I11]			Kawasaki, Kobe	4/1940	28.2.1941	5.1942	sunk 11.1.1944

Technical data

Displacement standard, t	2434
Displacement normal, t	2934 / 4149
Length, m	108.4 pp 112.0 wl 113.7 oa
Breadth, m	9.55
Draught, m	5.36
No of shafts	2
Machinery	2 Kampon diesels / 2 electric motors
Power, h. p.	12400 / 2400
Max speed, kts	23.5 / 8
Fuel, t	diesel oil 220
Endurance, nm(kts)	16000(16) / 60(3)
Armament	1 x 1 - 140/40 11-shiki, 2 x 2 - 25/60 96-shiki, 6 - 533 TT (bow,18), 1 catapult, 1 seaplane (E14Y1)
Electronic equipment	93-shiki sonar, 93-shiki hydrophone
Complement	114
Diving depth operational, m	100

Standard scale images

Graphics

Project history

Ko-Gata A1 type. Three submarines of "model A" (Ko-Gata) were built under 3rd (1937) and 4th (1939) Supplementary programmes. Design was developed on the basis of Junsen 3 type cruiser submarine. Intended for usage both in a role of flag ships of submarine task forces and for a retranslating of radio messages of ship groups operating at great distance from bases, were equipped with powerful radio translating equipment. In comparison with previous Junsen 3 type, location of aviation armament was changed: from stern it have transferred to fore end, seaplanes launched fwd by the course. Watertight spacy hangar has been fulfilled in common complex with CT. Double-hulled, endurance was about 90 days.

4 more submarines of this type, provided by the 1939 programme, have refused and reordered under other designs. Also two submarines included in the 1942 programme (Nos 700 and 701) have not been laid.

Modernizations

1943-1944, some survived: + 2-shiki 2-go radar

Naval service

I11 after 11.1.1944 was lost in Samoa area (possibly mined). I9 was lost in Aleutian area (possibly sunk 13.6.1944 at Kiska by US destroyer Frazier). I10 was sunk in Saipan area 4.7.1944 by US destroyer David W. Taylor and escort destroyer Riddle.