1) Ship type 
In the course of the war, the design was simplified and scaled down to permit larger numbers of vessels to be built more quickly. ==Classes== ==={sclass-|Shimushu|escort ship|4} (Ishigaki)=== ==={sclass-|Etorofu|escort ship|4} (Matsuwa)=== ==={sclass-|Mikura|escort ship|4} (Chiburi)=== ==={sclass-|Ukuru|escort ship|4} (Okinawa)=== ===Others=== In ...