Training

Avid diver and professor of computing Dr. Phil Pfeiffer gives an account of how the love of diving, persistence, US$100,000, and a homebrew aerator turned an abandoned quarry in the US state of Tennessee into a thriving dive site for a region that lacked one—and had lost prospective divers for want of a site.

Rebreathers are great pieces of kit that do away with the need to carry an excessive amount of dive cylinders on deeper dives. However, this advantage is offset by the need to also carry additional open circuit cylinders on which a diver can bail out in case of a rebreather malfunction. Using another rebreather could be a better solution and to that end, a bailout rebreather course has been developed.

Tulum has changed a lot since I was here last, well over 45 years ago. Once a mere dusty village with beach huts, it is now a booming town with a main street full of bars, restaurants and tourist shops.

Getting back into diving after a break is something a lot of us will be doing soon, as pandemic restrictions lift. At least, we hope so. This is the story of one diver’s experience of returning to the sport—although, in his case, he had been out of the water for 20 years!

Nowadays, more and more recreational divers are coming into contact with technical rebreather divers, perhaps even being buddied up with one on a dive. What follows are some good things for open circuit divers to know about closed circuit rebreathers. Michael Rothschild gives us a quick glimpse into rebreather diving and what one can expect when diving in a mixed team.