Underwater breathing apparatus

Underwater breathing apparatus is equipment which allows the user to breathe underwater. The three major categories of ambient pressure underwater breathing apparatus are:

Open circuit scuba, where the diver carries the gas supply, and exhaled gas is exhausted to the environment
Rebreather scuba, where the diver carried the gas supply, and exhaled gas is recycled for further use, and
Surface supplied diving equipment, where the gas supply is provided from the surface through a diver's umbilical

Atmospheric pressure underwater breathing apparatus is also used in the form of armoured atmospheric diving suits, which maintain an internal pressure approximating surface pressure

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.