- Messages
- 7,660
- Reaction score
- 4,717
- # of dives
- 200 - 499
Yes, I understand the rescue/return part of gas planning. The important part.
But the point that I was going for was that one's gas consumption rate is variable and one can easily determine one's extremes to set a range. After a few simple trials, one can have a reasonable estimate of one's "nearly fell asleep on the couch" consumption rate, an average dive consumption rate, and a constant moderate finning consumption rate. Some find it interesting to compare a given dive to one's range. Yes, I believe that this discussion belongs in basics.
I would caution anyone trying to determine a max stressed consumption rate that they do it with help and in water shallow enough to stand up in. I did this in a PSD course. The drill was to fin as hard as possible for one minute, you get a tap on the head by your assistant, and then just go to your necklace reg. That was an eye-opener. Never, ever get air starved underwater. The slightest problem can be disastrous.
But the point that I was going for was that one's gas consumption rate is variable and one can easily determine one's extremes to set a range. After a few simple trials, one can have a reasonable estimate of one's "nearly fell asleep on the couch" consumption rate, an average dive consumption rate, and a constant moderate finning consumption rate. Some find it interesting to compare a given dive to one's range. Yes, I believe that this discussion belongs in basics.
I would caution anyone trying to determine a max stressed consumption rate that they do it with help and in water shallow enough to stand up in. I did this in a PSD course. The drill was to fin as hard as possible for one minute, you get a tap on the head by your assistant, and then just go to your necklace reg. That was an eye-opener. Never, ever get air starved underwater. The slightest problem can be disastrous.