While in Thailand these last two weeks, I completed training on Nitrox and advanced wreck diving on a WW2 wreck.
In a wreck, you simultaneously have to monitor normal dive constraints along with the added challenges of low visibility in a constrained environment. I was managing my air, depth, no decompression time, my buoyancy, a dive light, and a spool of nylon line. The nylon line is for you to follow blindly out of the ship if someone accidentally “silts up” the dust in the wreck by kicking it with a fin. While you dive, you have to play it out and tie it off at regular intervals with specific techniques to avoid it creating other problems.
It’s like navigating a multi-level labyrinth in the dark, with a time limit, where you risk death if you lose track of what’s happening or don’t complete tasks correctly.
It’s really fun.
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