CH-28s were an improved design based on the CH-13 class design. From Sep '44, most of the surviving units of the class were rearmed with triple-mount 25-mm Type 96AA guns and were fitted with Type 22 radars.
|| 420-tons standard.|
||160.9' x 22' x 8.8'
||2 diesel engines, 2-shafts, 1,700 b.h.p, maximum speed 16 knots
||1 x 80-mm (3-inch)/40 cal HA gun, 2 x 13.2-mm mg, 2 depth charge rails, 36 depth charges.|