v_1matst:So if your computer dies and you've run into deco time how are you supposed to know your depth so you can do your deco stop? An analogue depth gauge (which can record max depth) is a very useful tool to have with you.
If your computer dies, how are you going to know you have incurred a deco obligation? How are you going to know how big that obligation is? How are you going to know how long you have been at any point in the water?
TwoBit