Scuba Diving International (SDI) Computer Nitrox Practice Exam

For which types of dives is Nitrox most beneficial?

1. Shallow dives

2. Technical dives

3. Night dives

4. Freshwater dives

The correct answer is: Technical dives

Nitrox, particularly enriched air, is most beneficial for technical dives due to its unique properties that enhance safety and duration under specific conditions. Technical diving often involves deeper depths and extended bottom times, where managing nitrogen absorption becomes crucial. By using Nitrox, which has a higher oxygen percentage compared to regular air, divers can experience reduced nitrogen exposure, leading to a lower risk of decompression sickness. This advantage allows divers to extend their dive times and reduce surface intervals compared to standard air at similar depths. In technical dives, where divers may be performing complicated tasks or exploring deeper environments, the reduced nitrogen loading is especially important as it can aid in managing the critical aspects of planning and execution. While Nitrox can also provide benefits in shallow dives and other scenarios, its true advantages shine in technical diving contexts where careful gas management and decompression considerations are paramount.