Trials are made to use Sikorsky helicopters as U-boat killers.
Full title reads: "U-BOAT KILLER".
Long Island Sound.
Various shots of a Sikorsky XR-4 helicopter on a converted merchant ship "Bunker Hill" demonstrating it can land and take off from a special flight deck on the ship. The idea is to load the helicopter with a depth charge and hover over U-boat targets and score a more direct hit.
(Mute & Track Negs.)