Wreck diving basic safety precautions · Basic safety precautions in Wreck diving
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Basic safety precautions in Wreck diving
Basic safety precautions in Wreck diving
All diving involving overhead environments is inherently more risky. Cave divers are taught the following mnemonic in relation to ways in which the risks can be minimised: The Good Divers Are Living (or sometimes: The Good Divers Always Live).
T - stands for Training. Don't do the dives if you don't have the training. Experience is not always an adequate substitute ? you may have been lucky so far. Adequate training gives you the skills you hope to never need.
G - stands for Guidelines. By laying a guideline you can find your way out if your lights fail, or silt reduces visibility to zero. In some cases where the wreck lies on its side or upside down, the route may simply be confusing, and it is very embarrassing to forget the way out, even if you finally work it out.
D - stands for Depth. Deeper waters means more nitrogen narcosis - divers need to have their wits about them inside high risk environments. Stay within your limits. Use Helium based gases for deeper dives if you can. They are more expensive and require extra training, but they improve the dive experience, as you remain more aware of what is happenning around you, and remember the dive much better when not narked.
A - stands for Air supply. Divers should always turn back at or before they hit two thirds of their original gas supply. One third is to go in, one third to get back out, and one third for your buddy in case of loss of gas emergencies. For full penetrations consider carrying a fully independant bailout gas supply.
L - stands for Lights. If you are penetrating beyond the zone where surface light can reach, divers are trained to carry at least three battery operated lights. It is no fun to be stuck in the middle of a shipwreck unable to see with a diminishing air reserve, though if properly trained, and using a guideline, it should not be a big problem to find your way out. The line is more important for safety than the lights, but the light will make you much happier at the time.
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Wreck diving Travel Guide from Wikitravel. Many thanks to all Wikitravel contributors. Text is available under Creative Commons Attribution-ShareAlike 3.0, images are available under various licenses, see each image for details.