Frogmen at the Royal Naval Physiological Laboratory are tested in a deep dive simulator.
Alverstoke near Portsmouth, Hampshire.
At the Royal Naval Physiological Laboratory's deep trial unit, we see frogmen of the Navy's Scientific Service going into a deep dive simulator. The compression chamber recreates the natural hazards the men will encounter in a real deep sea dive.
Some men watch the frogmen at a control panel topped with four closed circuit television (CCTV) screens and test communications through a microphone. The pressure is raised and lowered in the chamber by the man at the control panel. After resurfacing, the two frogmen climb through a door into the decompression chamber and lie on beds with oxygen masks to reacclimatise before going back to the 'outside world'. A doctor enters this chamber to check the men.
Cuts exist - see separate record.