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April 2019    Download the Entire Issue (PDF) Vol. 34, No. 4   RSS Feed for Undercurrent Issues
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Technical Diving: Is It For You?

“nobody had any problems using air at 180 feet”

from the April, 2019 issue of Undercurrent   Subscribe Now

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As you just read in the previous travel article, our undercover diver writes of the dives on Truk Lagoon wrecks as technical dives; however, all but one of those is totally possible for a recreational diver to do while breathing either air or nitrox from a single tank.

To visit the deepest San Francisco Maru, which sits at 205 feet, may be daunting for some, but others manage it, merely by taking adequate supplies of air with them and being prepared to wait for a bit, depending on how much decompression time they've clocked up, at 20 feet before finally making for the surface. (Or you can simply check out the top deck, at 165 feet, or the tops of the two masts, which stand at the 105 foot-mark, and you'll keep out of deco that way).

Those divers who visited the 180-feet deep wrecks of Bikini Atoll in the Marshall Islands with Bikini Atoll Divers learned to use air for the main part of the dive, then swap to nitrox 80 at 30 feet on the way up to speed up decompression procedures (a procedure devised for Bikini Atoll by Tom Mount, a cave diving pioneer and CEO of the International Association Of Nitrox and Technical Divers). It's not rocket science but it demands that a diver starts off with enough air to do the deep part....

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