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Ch-13 Class, Japanese Submarine Chasers


Photograph of Ch-14, a Ch-13 class submarine chaser

Wikimedia Commons


Specifications:


Tonnage 438 tons displacement
Dimensions
167'4" by 22'0" by 9'0"
51.00m by 6.71m by 2.74m
Maximum speed       16 knots
Armament
1 3"/40 AA gun
2 13mm/76 machine guns
1 depth charge rack, 2 depth charge throwers (total 36 depth charges)
Machinery
2-shaft diesel (1700 bhp)
Modifications
1944-9: 12x3 25mm/60 AA guns, 2 depth charge throwers, 2 depth charge rails, 36 depth charges, Type 93 sonar and Type 22 radar, radar detector


The Ch-13s were completed in 1940-42 as submarine chasers. They were based on the Ch-1s and were used as fast attack transports during the early days of the Pacific War. Hull modifications made them very seaworthy.


Units in the Pacific:

Ch-13     
Subchaser Division 2
Torpedoed 1943-4-3 near 142.0E 41.0N by Pickerel
Ch-14
Subchaser Division 2 Sunk by aircraft 1945-7-28 at Owase
Ch-15
Subchaser Division 2
Ch-16
Subchaser Division 21 Sunk by aircraft 1944-7-4 at Chichi Jima
Ch-17
Subchaser Division 21 Torpedoed 1945-4-28 off Fukushima by Springer
Ch-18
Subchaser Division 21 Sunk by aircraft 1944-12-30 off Luzon
Ch-19
Kure Local Defense Squadron     

Ch-20
Kure Local Defense Squadron     
Ch-21
Kure Local Defense Squadron     
Ch-22
1 Naval District
Sunk by aircraft 1944-2-19 off New Ireland
Ch-23
1 Naval District
Ch-24
Completed 1941-12-20     
Sunk 1944-2-17 off Truk by gunfire from Burns
Ch-26 Completed 1941-12-20 Sunk by aircraft 1945-7-30 off Korea
Ch-25
Completed 1941-12-29
Torpedoed 1942-7-15 off Kiska by Grunion
Ch-27
Completed 1942-1-28
Torpedoed 1942-7-15 off Kiska by Grunion

References

CombinedFleet.com (accessed 2009-10-17)

Jentschura, Jung, and Mickel (1977)

Materials of IJN (accessed 2009-10-17)

Morison (1948)

Worth (2001)



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