Training

When we learn to scuba dive, we are given a little knowledge and taught some basic skills. We take a theory test and demonstrate that we can perform the skills and that’s it, we get a licence.

Readers of my Scuba books often say how useful they find the stories I tell to illustrate key messages. The stories are all true. I wish I could say I made them up, but I am not that creative. Fortunately, life tends to be able to conjure up real situations that are far more instructive than those I could ever invent.

Human factors is about making it easier to do the right thing and harder to do the wrong thing. Therefore, for divemasters, human factors is about making it easier for them and their divers to do the right thing and harder to do the wrong thing.

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.