Categories
History Interviews SCUBA Diving

John Clarke

John R. Clarke, Ph.D. (born November 20, 1945) is an American scientist, private pilot, and author. He served as Scientific Director at the United States Navy Experimental Diving Unit (NEDU). Clarke is recognized as a leading authority on rebreather engineering. He has an extensive academic career in biological and physiological sciences. He is an excellent […]

Categories
Dive Computers SCUBA Diving

Cochran Undersea Technology inDepth Magazine

With Michael Menduno help I authored this article for GUE’s (Global Underwater Explorers) InDepth blog/magazine. It all has been a labor of love, and we hope you enjoy reading it as much as we enjoyed writing and editing it. As any other article some photographs are left out, not all of them can make it for one reason or another. Below are […]

Categories
History SCUBA Diving

Ascent Rate: 60ft./min.?

Have you ever asked to your instructor how was calculated/ came-up-with the ascent rate of the tables or computer that you used? Do you think it reflects basic fact of human physiology? Well, the short answer is no. The selection was made by the USA NAVY based on a compromised between work and safety. At […]

Categories
Scientific Research SCUBA Diving

MK29 rebreather

Recently I spoke with John Clarke, on our conversation he mentioned that the NAVY is working on a CCR that could be used with umbilical as a backup; so if you still pondering about it, below are public-videos explaining the concept