Cathay Stray
New
Let us think a little about weight calculation - what are the limits of our BCs and how heavy one has to be to fail to resurface in case the BC gets cut or otherwise damaged beyond repair underwater.
Say, I have a DiveRite Trek wing. The manufacturer claims it "has 47 pounds/21 kgs of lift and can accommodate up to 85 ft3/13 L twin backmount tanks and one 80 ft3/11 L stage tank".
Well, fine, it can accomodate that much weight however there is a variable if I understand the thing correctly - depth.
In simple words, a BC alone acting as a lift bag can bring 21 kg to the surface. Whatever the depth is.
But. At a certain depth neoprene wetsuit will compress to the point when it ceases to provide any buoyancy at all.
So if this diver goes beyond such depth chances are he will be unable to resurface without assistance as he will become too heavy for a BC to take him back upstairs (let's hope he at least has a buoy).
Is there any formula to roughly calculate the diver's weight at different depths?
Also, is there a standard procedure for situations of total loss of buoyancy (BC cut or punctured)? Dropping the weights may work but what if the problem happens during a deco dive?
Thank you.
Say, I have a DiveRite Trek wing. The manufacturer claims it "has 47 pounds/21 kgs of lift and can accommodate up to 85 ft3/13 L twin backmount tanks and one 80 ft3/11 L stage tank".
Well, fine, it can accomodate that much weight however there is a variable if I understand the thing correctly - depth.
In simple words, a BC alone acting as a lift bag can bring 21 kg to the surface. Whatever the depth is.
But. At a certain depth neoprene wetsuit will compress to the point when it ceases to provide any buoyancy at all.
So if this diver goes beyond such depth chances are he will be unable to resurface without assistance as he will become too heavy for a BC to take him back upstairs (let's hope he at least has a buoy).
Is there any formula to roughly calculate the diver's weight at different depths?
Also, is there a standard procedure for situations of total loss of buoyancy (BC cut or punctured)? Dropping the weights may work but what if the problem happens during a deco dive?
Thank you.