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It was 04:00 and I woke up with a dull pain in my left forearm and pins and needles in my left hand. Bugger! The Dives That day I had completed two dives, the first to max depth 44m with an average depth of 38m for 27 mins and completed 31 mins of deco using 50%. The second was to a max of 26m,...
How safe are you when you dive and how do you measure safety? Think about the following story and how safe the situation was... Six divers had decided to undertake a 30m dive from a RHIB. John and Dave were diving as a team with their local university dive club and had over 2000 dives between th...
Human factors can be a bit confusing to many people, and there is a really good reason for that. Read on and find out why. "Ergonomics (or human factors) is the scientific discipline concerned with the understanding of interactions among humans and other elements of a system, and the profession...
In 2012, two divers entered the water for a check-out and set-up dive in 115ft (35m) of water dive on their rebreathers. 27 mins later, one of them was on the surface having been rescued by their inexperienced closed circuit rebreather (CCR) buddy having suffered an oxygen toxicity seizure. The v...
Where there are accidents, incidents or near misses, there are parts of your behaviour, your team's behaviour, your centre's behaviour or your agency's behaviour that you don't want other people to see. It is only natural. We are hard-wired that way. Divers make mistakes they don’t talk about, e...
It is easy to ascribe ‘human error’ to diving incidents because we often lack details about what happened. It is also perversely satisfying to blame someone, an individual, rather than attribute it to a system issue. Part of this is because we can then start internalising this, distancing ourselv...
The body contains millions of cells, a fraction of which are blood cells. Those cells are broadly split into two types, red blood cells for carrying nutrients and oxygen to the tissues and recovering the waste and CO2 for disposal, and white blood cells which are used to fight ‘bad stuff’ that is...
One of the worst dives I have undertaken was in the Red Sea on a night dive scootering between the four wrecks on the Abu Nuhas reef. The dive itself had the potential to be awesome. 10 divers on scooters, a mixture of OC and CCR divers (I was on CCR), following the reef from left to right on the...
The US Forest Service (USFS) operates in a highly dynamic and high-risk environment. Changes can happen which can have catastrophic circumstances if they are not picked up. Unfortunately, sometimes things do go wrong and firefighters die or large amounts of property is lost. However, the USFS rec...
One of the key messages given to divers all through their training is that anyone can thumb (end) the dive at any time for any reason and no questions will be asked. However, those who have been in a such a situation, it isn't easy. "There were four of us diving on the wreck which lay...
