Navy Dive Manual Practice Test

Not practicing proper ascent techniques significantly increases the risk of decompression sickness. This condition occurs when a diver ascends too quickly, leading to the formation of nitrogen bubbles in the bloodstream due to rapid pressure changes. As divers descend, their bodies absorb nitrogen from the breathing gas; if they ascend too quickly, this nitrogen does not have adequate time to safely off-gas from the body, resulting in potential injuries to various tissues and organs.

Proper ascent techniques, such as making safety stops and ascending slowly, give the body time to eliminate excess nitrogen safely, thus helping to prevent decompression sickness. Understanding this principle is crucial for maintaining diver safety and ensuring a successful dive experience.