| Re: Bonaire at 200 fsw -- Windjammer Wreck
Eric:
I used a 30 for bailout on the recreational dives as it was easy to get and I knew I'd use it for the Windjammer. However, it was overkill. Let's say you are going to be doing no-deco dives to around 99 fsw (4 ATA) and your SAC rate is 1.0 cu ft per minute in an emergency situation like a total loop failure.
"Worst Case" scenario
99 fsw to 33 fsw takes about three minutes or 3min x 4 cu ft/min = 12 cu ft
33 fsw to 15 fsw for safety stop 1min X 2 cu ft/min = 2 cu ft
3 minute safety stop 3 min x 1.5 cu ft/min = 4.5 cu ft
Total = 18.5 cu ft
So, I'd say you could easily get by with taking a 19 cu ft pony bottle (and this doesn't consider breathing open circuit off your diluent)
Doug |