The shop this lady was diving with is PADI and offers DSAT, I am a PADI Instructor but NOT DSAT, just tech for NAUI, TDI about the same amount of time as Doppler, he may have arrived a little earlier as my first recollection of that day was him with a coffee in hand...
It is my understanding that DSAT requires dual bladders in their tech training. I know I have been told that a thousand times by people asking for HOG wings with dual bladders so they could use them in DSAT classes. I do NOT know if they teach both inflators connected or not.
I do know that my personal view is that deliberately diving with a piece of equipment disabled is IMHO stupid.If you need to disable it to be safe you are better off not bringing it. I will make exceptions for limpet mines but that is it. Yet as Doppler points out there is too much risk diving with two inflators connected, confusion will and has caused fatal accidents. Thus my personal view is that dual bladder wings are stupid, they add nothing (really in an emergency is somebody going to be able to attach the second inflator and use it? i doubt it).
Unlike Steve , I do know of a few accidents where the wing was a issue, some to do with bungees too tight, far too many where inflators have auto inflated, some from lack of maintenance of the inflator and others because the First stage HP seat let go and sent 3000+ psi to the inflator. Some designs that forces the inflator open causing the wing to inflate rapidly, other designs it doesn't but I've seen the inflator actually explode from the pressure.
In my teaching I believe in and teach a balanced rig that a diver can swim to the surface at any time when wet even with a loss of a wing and redundant buoyancy in a drysuit for when too heavy (big steel tanks) to be able to swim to the surface.. I do not personally approve or agree with using a double bladder wing.
It is my understanding that DSAT requires dual bladders in their tech training. I know I have been told that a thousand times by people asking for HOG wings with dual bladders so they could use them in DSAT classes. I do NOT know if they teach both inflators connected or not.
I do know that my personal view is that deliberately diving with a piece of equipment disabled is IMHO stupid.If you need to disable it to be safe you are better off not bringing it. I will make exceptions for limpet mines but that is it. Yet as Doppler points out there is too much risk diving with two inflators connected, confusion will and has caused fatal accidents. Thus my personal view is that dual bladder wings are stupid, they add nothing (really in an emergency is somebody going to be able to attach the second inflator and use it? i doubt it).
Unlike Steve , I do know of a few accidents where the wing was a issue, some to do with bungees too tight, far too many where inflators have auto inflated, some from lack of maintenance of the inflator and others because the First stage HP seat let go and sent 3000+ psi to the inflator. Some designs that forces the inflator open causing the wing to inflate rapidly, other designs it doesn't but I've seen the inflator actually explode from the pressure.
In my teaching I believe in and teach a balanced rig that a diver can swim to the surface at any time when wet even with a loss of a wing and redundant buoyancy in a drysuit for when too heavy (big steel tanks) to be able to swim to the surface.. I do not personally approve or agree with using a double bladder wing.
