The United States navy launches its biggest submarine, the V.2.
Item title reads - Uncle Sam's largest submarine. The V.2 launched at the US (U.S.) navy yard. Portsmouth, USA (U.S.A.).
L/S of men hitting the bottom of the submarine with hammers. L/S as the boat is launched into the sea, the U.S. flag flies on top. L/S of the submarine in the water with the crew on deck.