What is the main goal of using nitrox in diving?

The main goal of using nitrox in diving is to increase the total time spent underwater. Enriched air nitrox contains a higher percentage of oxygen compared to regular air, which can lead to a reduction in nitrogen absorption during a dive. As a result, divers can extend their bottom time and minimize the risk of nitrogen narcosis and decompression sickness, assuming they manage their exposure to the increased oxygen levels carefully. This allows divers to enjoy longer dives without the need to significantly change their ascent profiles or safety stop requirements.

While improved buoyancy control, cost reduction, and eliminating the need for safety stops are potential considerations in diving, they do not accurately capture the primary purpose of using nitrox. The primary advantage lies in enhancing dive duration by effectively managing nitrogen exposure, thus extending the enjoyment and productivity of diving experiences.