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The Private, Exclusive Guide for Serious Divers Since 1975
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May 2016    Download the Entire Issue (PDF) Vol. 31, No. 5   RSS Feed for Undercurrent Issues
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Flotsam & Jetsam

from the May, 2016 issue of Undercurrent   Subscribe Now

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Errors are Not Always a Laughing Matter! Our piece on chocolate last month carried our writer's mistake in that we mentioned nitrous oxide when it should have been nitric oxide. Nitrous oxide is commonly known as 'laughing gas.' Well, we thought it was funny! Bill Domb was the first reader to spot it. Scientists at Kingston University in the UK have also recently discovered that eating dark chocolate can significantly boost the performance of athletes. We were misinformed when we wrote that the World War II aircraft recently rediscovered off Malta was a Neptune P2. Reader Harry Haley pointed out that such aircraft were not in service until later....

Most Powerful Dive Computer, Most Powerful Price. The Poseidon M28, claimed by its Swedish manufacturer to be the world's most powerful dive computer, goes on sale in May. It boasts maps, graphics, GPS for surface use, Dive-by-Wire and is said to be incredibly intuitive to use. Naturally, it is designed to have enhanced functionality when used in conjunction with Poseidon's SE7EN/ MKVI rebreather management system and is depth-rated down to 656 feet. Most important, the formula that keeps you safe from decompression injury, the algorithm, is dual in that the user can choose between DCAP and Bühlmann ZHL16C, with the possibility to set gradient factors. At $2000, it might be too expensive for most divers, even those with closed-circuit rebreathers. (

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