The CH-4 class was also known as the CH-7 class since CH-7 was the first unit completed. During the war, all nine units of the class were rearmed with triple-mounted Type 96 25-mm AA guns and fitted with a Type 13 radar.
|| 291-tons standard.|
||184.5' x 18.4' x 7.4'
||2 diesel engines, 2-shafts, 2,600 b.h.p, maximum speed 20 knots
||2 x 40 mm AA guns, 36 depth charges.|