What should divers learn about the relationship between depth, time, and ascent rates?

Understanding the relationship between depth, time, and ascent rates is essential for all divers, as these factors are crucial in preventing accidents related to decompression sickness and solidifying general dive safety.

When a diver goes deeper, the pressure increases, which affects nitrogen absorption in the body. The longer a diver stays at depth, the more nitrogen their body will absorb. If a diver returns to the surface too quickly without allowing for adequate decompression stops, they risk developing decompression sickness, also known as "the bends." This can cause severe health issues, including joint pain and neurological symptoms, and can even be life-threatening.

Ascent rates are equally important. A slow, controlled ascent allows the body time to off-gas nitrogen safely. Most dive training agencies, including NAUI, recommend ascent rates to minimize risk. The general guideline suggests ascending no faster than 30 feet per minute and making safety stops, particularly after deeper or longer dives.

Thus, the relationship between depth, time, and ascent rates is fundamental knowledge that divers must grasp to enhance safety and prevent accidents, applicable to all levels of diving, whether recreational or technical.