Posted by Kendall Raine on March 09, 2004 at 09:20:53:
In Reply to: Re: Holy Mackerel! posted by seahunt on March 08, 2004 at 20:57:48:
Chris is right on. The point is not mere transit time under controlled conditions. That's a best case scenario. The point is does the cylinder have sufficient capacity to get you home, unhurt, when something goes wrong. Afterall, you don't need the pony UNLESS something has already gone wrong.
Some years ago there was an accident at Farnsworth. The victim had an Air X which allowed us to run his profile on computer. The guy had a working SAC of .6 right up to the point he had a problem. His SAC jumped to 2.0. At that rate he would have drained a 6 in 30 seconds at his max operating depth.
That is Chris' point.