Launching of the submarine the HMS Poseidon in Barrow-in-Furness, Cumbria.
Full titles read: "LAUNCH OF HMS POSEIDON - second of "P" Class Submarines - launched at Vickers - Armstrong's famous Yard."
M/S and L/S of the hug submarine sliding down the ramp into the water into the water. L/S of the sub being towed down the estuary by tugboat.
The HMS Poseidon submarine sank of Hong Kong in June 1931.