limeyx
Guest
Rick Murchison:There have been a couple of threads on the CESA lately, with several folks declaring it an unnecessary skill, because with "proper" diving skills you'd never need it.
Here are just two of many examples (I ain't pickin' on you two; y'all just said it clearer and in fewer words than the others )
Rick
IMO none of those cases require a CESA.
CESA is when you have NO GAS. The only real reason(s) to have no gas in single-tank recreational diving is
1) you and your entire team all run out of gas (or really low) at the same time (gas planning, violating the plan)
2) you run out of gas and your buddy is nowhere to be found
3) you both have a catastrophic tank failure at the same time that drains both your tanks.
4) you have some kind of "event" tox/pass out/medical emergency/panic that requires an immediate ascent. here, you still can do a 30 fpm ascent because your buddy will be there to help you, and he has gas, right? and he can have a reg ready for if you become able to take a reg.
I dont see a need to do a CESA for basically exactly the reasons lamont suggests.
of course, if 99% of your diving is with instabuddies who dont follow good procedures then
1) dont dive with them
2) get redundancy (doubles)