Navy Dive Manual Practice Test 2025 – Complete Exam Prep

Question: 1 / 400

During altitude diving, which technique is used to find the equivalent dive depth?

Depth estimation

Cross correction

The equivalent dive depth during altitude diving is determined using the cross correction technique. This method takes into account both the actual altitude above sea level and the corresponding pressure, allowing divers to calculate the appropriate pressure that would be exerted at a certain depth if they were submerged in water at sea level.

Altitude affects the pressure experienced by divers; therefore, traditional calculations based on sea levels need adjustments when diving at higher elevations. Cross correction incorporates these necessary adjustments to ensure the diver's safety and proper management of exposure to the surrounding pressure during their dive. By utilizing this technique, divers can effectively estimate their dive depths in environments where altitude may significantly influence pressure, ensuring they remain within safe limits and can manage their dive profiles accurately.

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Vertical adjustment

Pressure balancing

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