If she is able to move around easily with a BC, tank and 50lbs of lead, I hope you were polite. Though that is probably why you went in as a group. Safety in numbers:)
The change in weight of any tank is going to depend on the amount of air in it at the beginning of the dive and the amount of air in it at the end of the dive. It doesn't matter if it is a steel or aluminum tank, if you use the same volume of air from both tanks they will both be lighter by the...
That may be true for where you are but it is not true for this area. Here in the Great Lakes it isn't unusual to have your boat tied to the back of another boat and have 2 granny lines to follow to the mooring ball/down line. We also tend to have a pretty good current so you would be so far...
A bang stick to the bottom of a kayak or canoe would make them think twice next time.
If you see them heading your way come up just close enough to the surface that you can grab their paddle as they go by.
I don't know of any agency that still teaches buddy breathing for OW. Naui doesn't cover it until Rescue and then it is only an introduction and how-to. It makes sense. If I only had one reg I wouldn't want to give it to someone that was just out of air. They are probably still panicky so...
Sorry. I did miss that. Even so, the numbers are so freaking far apart that there really isn't a correlation. I'd be willing to bet that my 100,000,000 is probably several 100,000,000 low. That really makes 4 million meaningless in comparison.
so we are talking 20,000 divers trained vs millions of divers trained and 500,000 dives vs 100,000,000 or more dives? That kind of skews any relevance.
Any student that would be thrown off by not training with the word "help" will also be thrown off in a real situation because there wasn't an instructor there yelling "this is a drill".
Ok. But lets make those numbers mean something. How many people total have taken instruction in a Scripps model course and how many people total have taken a regular 40 hour course?
Just this minute I decided to teach my own 10 minute scuba course. So far I have 0 injuries of any kind and 0...
They don't make any such thing that I know of either. Even if they did it would be pretty darn tall. You would have a male din connector that attached to the tank valve. 3 to 5 inches above that you would have one female DIN with a valve and then off to the side of that a second (third?) DIN...
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