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L4 Class, Japanese Submarines


Photograph of L4 class submarine

Wikipedia Commons


Specifications:


Tonnage

988 tons standard displacement

996 tons surfaced

1322 tons submerged

Dimensions

250' by 24'2" by 12'5"

76.20m by 7.37m by 3.78m

Maximum speed      

16.5 knots surface

8 knots submerged

Dive
to 200 feet
to 60 meters

Complement

60

Armament

1 3"/40 AA gun

1 machine gun

6 21" torpedo tubes (10 torpedoes)

Machinery
2-shaft diesel (2400 hp) or electric (1600 hp)
Range
5500 nautical miles (10,200 km) at 10 knots surfaced
80 nautical miles (150 km) at 4 knots submerged


The L4s were short-ranged (RO) submarines completed between 1923 and 1927 at the Mitsubishi shipyard in Kobe. They were the oldest Japanese submarines to see meaningful combat during the war. All were relegated to training by 1943.


Units in the Pacific:

Ro-60      

off Wake

Run aground 1941-12-29 off Kwajalein

Ro-61

off Wake

Sunk 1942-8-31 by aircraft and Reid

Ro-62

off Wake


Ro-63

approaching Gilberts     


Ro-64

approaching Gilberts

Mined 1945-4-12 in Hiroshima Bay

Ro-65

off Wake

Sunk by aircraft 1942-11-4 at Kiska

Ro-66

off Wake

Sunk 1942-12-16 in collision with Ro-62 off Wake

Ro-67

approaching Gilberts


Ro-68

approaching Gilberts



References

Carpenter and Polmar (1986)

CombinedFleet.com (accessed 2009-12-24)

Worth (2001)



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