United States submarine aeroplane carriers are new war weapon.
Item title reads - War's Latest Terror. Successful experiments with U.S. submarine aeroplane carriers. USA (U.S.A.)
M/S of the long submarine with a small aeroplane on top, the crew work on deck. M/S as the submarine starts to submerge and the aeroplane sets off across the water. M/S of the aeroplane heading back towards the submarine which rises to support it.