How can you account for gas narcosis during a deep dive?

The best approach to account for gas narcosis during a deep dive is to plan shorter dive times. Gas narcosis is caused by the increased partial pressure of nitrogen (or other gases) at depth, which can lead to impaired judgment and motor skills. By limiting the amount of time spent at deeper depths, divers can reduce their exposure to the heightened levels of nitrogen in their breathing gas.

Shorter dive times allow divers to ascend before the effects of narcosis become significant, increasing overall safety during the dive. Additionally, it’s crucial for divers to monitor their own physical and mental state; recognizing any early symptoms of narcosis can prompt a timely ascent.

While the other options may have some relevance, they do not directly address the issue of gas narcosis as effectively as planning shorter dive durations. Using less air, staying at shallow depths, or increasing buoyancy control might manage aspects of dive safety, but they do not specifically mitigate the risks associated with the effects of nitrogen narcosis experienced at depth.