The air diver enters the water at 11:37 a.m. and dives to 130 feet for eight minutes. The nitrox/computer diver enters the water at the same time and dives to 132 feet for 11 minutes. Surface ...

But in general, people dive nitrox to gain dive time, and dive right up to the limits, so the benefit is extended time, not increased safety. Report comment. Reply. BillyTheGator says: ...