> to the sand, and the wreck sits upright, making it a 170 foot dive, or less, a > depth from which free ascent is possible What planet are you from? Technically, you are right. Hell, some guys can get all the way down to 400 feet and then make a free ascent all the way up. However, in the real world of Scuba, anyone who has actually had to make a free ascent knows that even 60 feet is a hell of a stretch. Deeper than that you need to rebreathe off the BC. Nevertheless, I agree that "naked with the magic stone" is a valid diving configuration in many cases, including the dive you described. Rich
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