CHAPTER 7 Scuba Air Diving Operations
Change A 7-1
C H A P T E R 7
Scuba Air Diving Operations
Purpose. The purpose of this chapter is to familiarize divers with standard and
emergency procedures when diving with scuba equipment.
Scope. This chapter covers the use of open-circuit scuba, which is normally
deployed in operations not requiring decompression. Decompression diving using
open-circuit air scuba may be undertaken only if no other option exists and only
with the concurrence of the Commanding Officer or Officer-in-Charge (OIC).
Closed-circuit underwater breathing apparatus is the preferred method of
performing scuba decompression dives. Operation of open-circuit, closed-circuit,
and semiclosed-circuit systems designed for use with mixed-gas or oxygen is
covered in Volume 4.
REQUIRED EQUIPMENT FOR SCUBA OPERATIONS
At a minimum, each diver must be equipped with the following items to safely
conduct an open-circuit scuba dive:
Life preserver/buoyancy compensator.*
Weight belt and weights as required.**
Submersible pressure gauge or Reserve J-valve.
Submersible wrist watch. Only one is required when diving in pairs with a
Depth gauge. **
* During the problem-solving pool phase of scuba training, CO2 cartridges may be
removed and replaced with plugs or expended cartridges that are painted Interna-
** These items are not required for the pool phase of scuba training.