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KT Class, Japanese Submarines


Photograph of KT-class submarine

U.S. Navy. Via Carpenter and Polmar (1986)


Specifications:


Tonnage

665 tons standard displacement

1000 tons submerged

Dimensions

243'4" by 20' by 12'1"

74.16m by 6.10m by 3.68m

Maximum speed      

13 knots surfaced

8 knots submerged

Dive
to 200 feet
to 60 meters

Complement

43

Armament

4 18" torpedo tubes (10 torpedoes)

1 4.7"/45 gun

1 machine gun

Machinery
2-shaft diesel (1200 bhp) or electric (1200 shp)
Range
6600 nautical miles (12,000 km) at 10 knots surfaced
85 nautical miles (160 km) at 4 knots submerged


The KTs (Kai-toku-chu) were short-ranged (Ro) submarines completed between 1923 and 1924 at the Kawasaki shipyard in Kobe. They were based on the French Schneider-Labeuf design. The boats originally had five torpedo tubes, but one was subsequently removed.

They were of limited usefulness, particularly since they could only fire obsolete 18" torpedoes, and they had already been relegated largely to training duty by the start of the war. However, their design was the basis for subsequent classes that made up Japan's coastal submarine force during the war.


Units in the Pacific:

Ro-30      

Kure      

Struck from the Navy List 1942-4-1 and permanently moored at Otake as training hulk

Ro-31

Kure


Ro-32

Kure

Struck from the Navy List 1942-4-1 and permanently moored at Otake as training hulk


References

Bagnasco (1977)

Carpenter and Polmar (1986)

Materials of IJN (accessed 2009-12-24)

Worth (2001)



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