Dan
Contributor
My reg, (Scubapro MK25/S600) will give enough warning. At 100 psi tank pressure it’ll start to get harder to suck air out of the reg. That gives me time to calmly get my Spare Air handy and ready to be used as soon as the air stops coming out of the reg. I can start to fin towards my buddy or slowly ascend to the surface until the reg quits then I’ll switch to the Spare Air.
Having the Spare Air keeps me calm, avoiding panicking and shooting up to the surface as I have some air to breathe for at least a minute or two to either swim to my buddy or ascend to as shallow as what the Spare Air can provide before doing the CESA.
Now I become more discipline in watching my NDL and start to ascend as soon as it reaches zero NDL. I don’t want to do CESA ever again.
So, to answer OP question, I did CESA from 10 foot depth once, but my goal is at zero depth, i.e., NONE. It’s not something that I want to do it again.
Having the Spare Air keeps me calm, avoiding panicking and shooting up to the surface as I have some air to breathe for at least a minute or two to either swim to my buddy or ascend to as shallow as what the Spare Air can provide before doing the CESA.
Now I become more discipline in watching my NDL and start to ascend as soon as it reaches zero NDL. I don’t want to do CESA ever again.
So, to answer OP question, I did CESA from 10 foot depth once, but my goal is at zero depth, i.e., NONE. It’s not something that I want to do it again.