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KD7 Class, Japanese Submarines


Photograph of KD7 class submarine

Wikipedia Commons


Specifications:


Tonnage

1630 tons standard displacement
1833 tons surfaced
2602 tons submerged

Dimensions

336'7" by 21'1" by 15'1"
102.59m by 6.43m by 4.60m

Maximum speed      

23.1 knots (surfaced)
8 knots (submerged)
Dive to 260 feet
to 80 meters

Complement

88

Armament

1 5"/50 dual-purpose gun
1x2 25mm/60 AA guns
6 21" torpedo tubes (12 torpedoes)
Machinery
2-shaft diesel (8000 hp) or electric (1800 hp)
Range 8000 nautical miles (15,000 km) at 16 knots surfaced
50 nautical miles (90 km) at 5 knots submerged
Modifications
1943: I-176, I-177, and I-181 converted to transports by removing the 4.7" gun and some torpedo reloads and providing fittings for a Daihatsu landing craft.


The KD7s were improved KD6Bs, with the tubes concentrated forward. They were originally to have four 25mm AA guns, but two were replaced with the 5" gun.


Units in the Pacific:

I-176      

Completed 1942-8-4      

Sunk 1944-5-17 near 146.5E 4.0S by Franks, Haggard, and Johnston

I-177

Completed 1942-12-28      

Sunk 1944-10-3 off Angaur by Samuel B. Miles
I-178 Completed 1942-12-26 Sunk 1943-5-28 off Espiritu Santo by SC-669
I-179 Completed 1943-6-18 Sunk accidentally 1943-7-14 off Akizaki
I-180 Completed 1943-1-15 Sunk 1944-4-26 off Kodiak by Gilmore
I-181 Completed 1943-5-24 Sunk 1944-1-16 off New Guinea
I-182 Completed 1943-5-10 Sunk 1943-9-1 off Espiritu Santo by Wadsworth
I-183 Completed 1943-10-31 Torpedoed 1944-4-29 near 133.0E 32.1N by Pogy
I-184 Completed 1943-10-15 Sunk 1944-6-15 off Guam by aircraft from Suwanee
I-185 Completed 1943-9-23 Sunk 1944-6-22 off Saipan by Newcomb and Chandler


References

Carpenter and Polmar (1986)

CombinedFleet.com (accessed 2 January 2007)

Jentschura, Jung, and Mickel (1977)

Worth (2001)


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