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Ma-1 Class, Japanese Minelayers


Specifications:


Tonnage

215 tons standard displacement

Dimensions

115'2" by 20'3" by 7'10"
35.10m by 6.17m by 2.39m

Maximum speed      

9.5 knots

Armament

1 3"/40 AA gun
2 13mm/76 machine guns
40 mines
16 depth charges
Modifications
Antiaircraft armament later increased with extra 13mm and 25mm/60 AA guns


The Ma-1s were coastal minelayers designed to be usable postwar as fishing vessels.

Units in the Pacific:

Ma-1     

Completed 1942-2-28 (Uraga Dock-Tokyo)     
Mined 1945-3-27 off Sumatra
Ma-2     
Completed 1942-4-10 (Uraga Dock-Tokyo)      Mined 1942-12-31 at Surabaya
Ma-3
Completed 1942-6-30 (Uraga Dock-Tokyo)     
Ma-4
Completed 1942-8-20 (Uraga Dock-Tokyo)      Sunk 1944-11-20 off Great Nicobar by British submarine Tally-Ho

References
Jentschura, Jung, and Mickel (1977)

Worth (2001)



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