Quote: (Originally Posted by
ianfirmin)
Very interesting thread, thanks for this. Can you tell us how the bail-out was configured?
On the Pelagian the O2 and DIL tanks (usually two 3 litre tanks) are simply attached to the sides of the scrubber with standard tank bands. As the unit does not have the restrictions of an external cover any size of tanks can be attached.
However, very large tanks (steel 15's or 20's) would become hard to hold steady and there is no need for a 15 or 20 litre tank of O2. Mark's solution is to attach the scrubber to the top of a 15 litre twin set with a standard manifold with a 5-7 litre tank of O2 attached to the side of the twin set. The twin 15's are plumbed in as the DIL but have enough volume to provide a realistic OC bailout. Having said which, this is still insufficient for a 145 meter dive so Mark was carrying another two 11 litre stage tanks with richer mixes and had an 11 litre tank of O2 on the line at 6 meters.
As I was on OC I had twin 15's plus four 11 litre stage tanks. Although Mark's rig sounds large and cumbersome it was still less so than my OC rig. Mark also had the comfort of a full redundant bailout while I was seeing my OC resources with limited reserves dissipate with every breath.
Regards,
Carl