New improved torpedo sinks U-977 submarine off Cape Cod. America.
Unissued / Unused material.
The former German submarine U-977 is sunk with an improved torpedo by a US submarine off Cape Cod. United States of America (USA).
LS the German submarine being towed into position. Various shots the American submarine crew loading and firing the enormous torpedo.
MS as the submarine is broken in two by the terrific explosion. One end sticks up and sinks slowly into the water.