Navy Dive Manual Practice Test 2025 - Free Navy Diving Practice Questions and Study Guide

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What is the significance of equalization while diving?

To adjust the buoyancy control device correctly

To balance internal and external pressure to prevent barotrauma

Equalization during diving refers to the essential practice of balancing the pressure in the body's air spaces—particularly the ears and sinuses—against the increasing external water pressure as one descends. This is significant as it helps to prevent barotrauma, which is an injury caused by the pressure differences. Barotrauma can result in severe pain and potential damage to these areas if not properly equalized.

When divers go deeper into the water, the pressure increases, and without equalization, the pressure inside the air spaces would remain lower than that of the surrounding water, leading to discomfort or injury. Therefore, divers employ techniques such as the Valsalva maneuver or the Frenzel maneuver to equalize, ensuring that their internal bodily pressures remain balanced with the external conditions. This practice is crucial for safety and comfort while diving.

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To enhance breathing efficiency underwater

To minimize the effects of carbon dioxide buildup

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