hg frogman
Contributor
Dive training should provide the optimal solutions for the environment the diver wants to explore.
Air is often "more optimal" than Trimix for open water dives down to 45 meters/150 feet. Especially if there is current. With air you don't necessarily have to use doubles or ANY deco stage and so you are way more streamlined, your deco is less complex, your ascent rate less critical, and so on.
Overkill may kill you as much (or more) than narcosis. Narcosis isn't the only factor, can't you understand this ?
An END of 45 meters/150 feet is often "more optimal" than an END of 30 meters/100 feet for deep open ocean dives (apart from cave diving and wrecks penetration). There is an interesting article of Mark Ellyatt about this, just google and you may find it.
Statements like "END greater than 30 meters/100 feet will harm you" become deadly boring when they are repeated like a mantra for whatever diving context there is.
Last edited: