I agree with you, I try to get the most out of every dive as I can returning to the boat with a safe amount of air and not much more
Thanks for explaining the J valves downsides and how are industry has changed over the years.
I have alot of
for the pioneers of scuba that gave there lives to make the changes in equipment we all share today.
More equipment can trump the lack of experience or training in most cases.
Your a diver is in a drift dive along with some other divers and your taking photos so your lagging behind a bit of the group. The Dm has just checked on everyone and has got the OK sign from you and all the other divers and starts heading the group around a huge coal head, suddenly your tank seal blows.
A few scenarios
1.Suddenly your tank seal blows and you decide you cant make it to the group so you stay with the current and ascend at a slight angel upwards towards the surface not going any faster than your slowest bubbles and hope you have enough air left to do a safety stop.
2. Suddenly your tank seal blows and you know that it will take a few minutes for your tank to empty and this will give you enough time to rejoin the group and kindly ask the first diver you come across if they would be so kind to lend you there octo because your having an issue right now.
3. Suddenly your tank seal blows and you take a breath and undue the shoulder strap and cumber bum and slip out of your bcd and turn your tank valve off and remove your 1st stage then crack the tank valve and take a few breaths, then start ascending with the current opening your tank valve as needed or leave it on the whole time taking normal breaths and doing a proper safety stop.
4, Suddenly your tank seal blows so you slip out of bcd and turn your tank off then remove your 1st stage and take a few more breaths then using your shears or other tool remove your tank seal. Take a few more breaths than install and new seal that you had handy near the tank valve area. Install 1st stage back and take a few breaths from your 2nd stage and return to the group or ascend safely to make a proper safety stop.
5. Suddenly your tank seal blows so with no troubles at all you change over to your pony bottle and rejoin the group and tell the DM your having and issue and would like to ascend at this time.
Sawy one moe
6. Suddenly your tank seal blows so you spit out your reg and flap your arms like a sissy all the while calling for your Momma
I could see how a pony bottle would be very handy and If I was to carry one I think I would have it on a tank mount right off my regular tank.
Edited by Bubble2Bubble, 01 September 2008 - 09:03 AM.