Drawings of both Koryu and Kairyu submarines, copied from 'Extracts from Small Battle Units of Foreign Powers, Appendix III Japanese Midget Submarines and Explosive Motor Boats', page 38 Koryu Type D submarines in an assembly shed at the Mitsubishi shipyard, Nagasaki, Japan, circa Sep 1945, photo 1 of 2The Kairyu (海龍 "Sea Dragon") was a class of Kamikaze midget submarines designed in , and produced from the beginning of 1945These submarines were meant to meet the invading American Naval forces upon their anticipated approach of TokyoDen Kairyu (海龍, Kairyū, "Sea Dragon") var en klasse med miniubåter av keiserlige japanske marinen, designet i 1943 til 1944, og produsert fra begynnelsen av 1945Disse ubåtene var ment å møte de invaderende amerikanske marinestyrker på deres forventede tilnærming til Tokyo
80 G Japanese Kairyu Type Midget Submarine
