Dive Master Practice Exam 2026 - Free Dive Master Practice Questions and Study Guide

Decompression models are designed to help manage the ascent rates and underwater time of divers to minimize the risk of decompression sickness (DCS), which can occur when nitrogen gas, absorbed by the body while diving, comes out of solution too rapidly during ascent.

These models work by calculating the levels of gas saturation in body tissues and providing guidelines for safe ascent profiles. By controlling ascent speeds and allowing for safety stops at specific depths, divers can effectively control the amount of gas that comes out of solution and prevent supersaturation in their tissues. When a diver ascends too quickly without following these guidelines, nitrogen can form bubbles in the body, leading to DCS.

Thus, the statement that decompression models help reduce DCS risk by controlling gas supersaturation is true, as they provide a systematic way to monitor and manage the levels of dissolved gases during and after a dive.