Underwater diving

Underwater diving means the use of any apparatus, whether self contained or connected to a distant source of air or other gas, whereby a person wholly or partially submerged in water, can obtain or reuse air or any other gas or gasses for breathing without returning to the surface of the water. Underwater diving would include, but is not be limited to use of SCUBA, surface supplied air, mixed gas, or re-breathers.

Source

36 CFR § 1.4

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Scoping language

The following definitions shall apply to this chapter, unless modified by the definitions for a specific part or regulation:

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