Diver communications
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Diver communications are the methods used by divers to communicate with each other or with surface members of the dive team. In professional diving, diver communication is usually between a single wor
The hand signal "OK"
Diver telephone c.1911
A hard-wired diver communications unit mounted in a waterproof box for convenience of transport and protection. The loose speaker has been added to increase output volume. There is a built in speaker behind the perforations on the panel.
Inside a Kirby Morgan 37 helmet showing the microphone in the oro-nasal mask, and one of the speakers at the top of the photo.
Standard diving dress
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Standard diving dress, also known as hard-hat or copper hat equipment, deep sea diving suit, or heavy gear, is a type of diving suit that was formerly used for all relatively deep underwater work that
Diver communications
…person, either another diver or a line tender on the surface, by a rope, airline hose or diver's umbilical. These date back to the time of the use of standard diving dress. Some of these signals, or pre-arranged variants, can be used with a surface marker buoy. The diver pulls down on the buoy line to make the buoy bob…
Diver in standard diving dress, Ožbalt, Slovenia (1958)
1842 sketch of the Deane brothers' diving helmet, the first practical surface-supplied diving equipment.
Air supplied from the boat by manually operated pump
Cave diving equipment from 1935 in the museum at Wookey Hole Caves in Somerset