7-1 INTRODUCTION

INTRODUCTION

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.

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