#850
ks54 - 4/04/2014 1:30 PM
Akidiver

One more thing i did not consider on the tank size is this.

As stated by others the pony is not part of your gas planning. It is for OOA.
Now add this for your 130 ft dive example. You have a 5 min ndl dive planned at 130 ft wreck you are accessing from the shore. In the wreck, you get tangled at the 4 minute point. Now you need to cut your way out. You are still on back gas. You are now a min of 4 in into deco. you increased SAC has burned all but 600# (if your spg is correct) of back gas. You will have to stop for say 5 min of deco and you have 2 min of air. You will need the pony for this now created OOA upcoming event because of the deco you will have to do. ONce you are on the surface you may still need air depending on waves ect.