Timeline Of Diving Technology
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1937: US Navy publishes its revised diving tables based on the work of O.D. Yarbrough.
Swim-diving starts
The 1930s:
In France, Guy Gilpatrick starts swim diving with waterproof goggles, derived from swimming goggles (which were originally intended to keep salt water out of the eyes at the surface).
Sport spearfishing became common in the Mediterranean, and spearfishers gradually developed the common sport diving mask and fins and snorkel, with mostly Georges Beuchat in Marseille, France, which created the speargun and the 1st isothermic wetsuit, and Italian sport spearfishers started using oxygen rebreathers. This practice came to the attention of the Italian Navy, which developed its frogman unit Decima Flottiglia MAS using oxygen rebreathers and
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