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A hypothetical situation for those of you who care to partake: Your making a relatively deep air dive, 140', your wearing a set of double 80's. In addition you've got an additional bottle hung on your belt with o2 for your 15 foot hang. The current is about a knot and a half and the temp is 12c. Visibility is a whopping 20 feet. Your diving with a family member, wife, son, daughter etc. (pick your soul mate). Both of you are experienced divers and in addition there is another diver along with you, who you trust and care about. After a lenghty bottom time you decide to head up, your family member and friend decide to stay for 5 more minutes to get those last pics or yank that last piece of scrap. Their at the anchor line so you decide to head up. You make it up to your third stop at 15 feet and discover; ah just intime, N2o2 is gone and that full bottle of o2 is waiting to purge your system. Normally you would still have some air left at this stage, however you've had to work harder than normal because of the current. Five minutes go by, and you think where the hell are they? You start to get a little worried because you left them 14 minutes ago, your heart rate rises a little, all of a sudden your friend floats up past you, bc inflated, unconscious. The surface current has picked up. Your family member is still down there. It's going to be at least 10 minutes(if everything goes smooth) before you can get back to where you are after surfacing and reloading. Your bottle of 02 has 1800 lbs left it it. What do you do?
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