Full title reads: "America. Safety for Submarines at last? Novel rescue chamber proves great success in first experiment - in deep water, on ill-fated S.4."

United States of America (USA).

Above water demonstration of new safety device for submarines - a watertight pod is attached to the hatch of the sub to allow escape.

Shots of the S4 submarine submerging. A boat is standing by at one side.

A deep sea diver climbs out of small boat and into water.

The escape chamber is lowered into the water. Shots of the chamber going under water.

Interior shots of submarine - sailors / submariners climb up ladder into escape hatch.

Shots of the chamber coming to the surface to be collected by the large boat. Submariners climb out of chamber onto boat.