"Koryu" Midget Submarines in drydock at Kure, Japan. Before and after Allied bombing. [740x1174] - Imgur
A heavily damaged midget submarine base constructed by occupying Japanese forces on Kiska Island, photo taken sometime in 1943, after Allied forces retook the island.
WW II The Navies
Japanese Type A Midget Submarine - Kiska Alaska - TracesOfWar.com
Places & Spaces
British Ships Involved - Submarines - X-Craft (Midget Submarine)
At the end of World War II, Allied Occupation forces found hundreds of midget submarines built and building in Japan, including large numbers of the “Koryu” type. Many of these boats were in massed groups at shipyards and naval bases.
Industry of war