Class, Japanese Patrol Boats

Specifications:

Tonnage 740 tons standard
Dimensions 228'0" by 28'3" by 10'0"
69.49m byy 8.61m by 3.05m
Maximum speed       17.5 knots
Complement 160
Armament 4.7"/45 dual-purpose guns
6 25mm/60 AA guns
1 3" A/S mortar
1 depth charge rack, 12 depth charge throwers (total 120 depth charges)
Range 6500 nm (12000km) at 14 knots
Modifications

1944-1945: Armament was 12 to 16 25mm AA guns.

1945-1: Converted to coal-firing boilers


The Type D patrol boats were smaller versions of the Ukurus built with the utmost speed and economy.


Production schedule:

Month Production Losses
1944-2 1 0
1944-3 3 0

1944-4

6

0
1944-5 3 0
1944-6 1 1
1944-7 1 0
1944-8 2 0
1944-9 3 1
1944-10 5 0
1944-11 4 1
1944-12 10 4
1945-1 6 1
1945-2 6 2
1945-3 8 5
1945-4 1 1
1945-5 0 0
1945-6 0 0
1945-7 2 5
1945-8 0 2

References

Jentschura, Jung, and Mickel (1977)

Worth (2001)

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