A cone-shaped hatch provided access to the I-400 subs’ hangar. Seirans were stowed with wings folded and floats removed in the 11.5 foot-diameter hanger, which opened onto a pneumatic catapult. (National Archives)
A cone-shaped hatch provided access to the I-400 subs’ hangar. Seirans were stowed with wings folded and floats removed in the 11.5 foot-diameter hanger, which opened onto a pneumatic catapult. (National Archives)