How is depth defined when using dive tables?

Depth, when using dive tables, is defined as the maximum depth attained during the dive. This is important for tracking the diver's exposure to pressure and managing the risk of decompression sickness. Dive tables are designed around the premise that the maximum depth determines the no-decompression limits and the nitrogen absorption levels in the body during a dive.

When a diver reaches a certain depth, the pressure increases, affecting how nitrogen is absorbed by the body. The tables take this maximum depth into account to calculate safe ascent profiles and decompression stops, ensuring divers avoid the risks associated with improper ascent from deeper depths. Maintaining awareness of the maximum depth helps divers plan their dives safely and effectively in accordance with these standards.