See? Your lack of confidence in this simple scenario proves that you don't have the first clue about what you're doing. A properly trained diver could easily fend off the shark attack while Superman and Jessica had dinner--shoot, a properly trained diver would finish in time to meet them after...
A third alternate gas source is not the solution. Proper training is. As others have said, the ability to retrieve a backup is critical and every diver should be comfortable with it.
I'll go a bit further on this one. You're thinking about solutions to the problem, and that's good. I'm of...
I'm heading to Durango for a week. My wife strongly suggested that I bring my kit because her parents' house is on the lake (I assume it's Vallecito), and she know I'd rather be diving than fishing. Is Vallecito divable, and how are the conditions?
I don't memorize the formuale for MOD, END, etc. per se. I understand the concept embodied by each formula, and if I need to use it, I just derive it on the fly. Kind of like the general gas law--I memorize it and derive the other laws from it.
Others have alluded to reducing the amount of work you do underwater--the extraneous fin movements, flopping hands, bad trim. Something else that can increase your work underwater is the type of fin you use. Use a floppy snorkeling fin to push you and your gear through the water, and you're...
Well...let's qualify that statement a bit. From what Doc has cited (and from what I understand), there is no evidence that pseudoephedrine predisposes one to decompression sickness. That's a far cry from saying it's OK to dive while taking a decongestant. Should the decongestant wear off at...
My wife (uncertified but wanting to get certified) asked me a question relating to birth control and diving, and I have no idea how to answer her. Therefore, I'm seeking answers from the experts here. I know that DAN says that diving with an IUD poses no health risks to a woman. But in your...
Actually, that was the abstract I was thinking of when I mentioned studies related to psuedoephedrine. It would be nice if the article could be accessed through Rubicon, but it appears they only have the abstract on file.
I think the OP was interested in whether cold medication affects...
Years ago there was a report concerning the use of non-steroidal anti-inflammatory drugs (NSAIDs, which may occur in some decongestants) in connection with TREATMENT of DCS. The theory behind the treatment, as I understand it, is that secondary tissue damage is caused by inflammation, and...
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