Search results

Maybe you should take a decent first aid course. O2 is standard treatment for injuries that reduce perfusion. In addition to anything that reduces O2 transfer in the lungs that means anything that reduces blood flow to the brain. I'll take the liberty of speculating that he was bleeding...

Normalization of deviance is just one aspect of complacency. Here's a simple fact that everybody knows, but may not have given much thought. Every single person who ever died in a fatal accident died in their first fatal accident. It's obvious that not having already died doesn't mean we...

I'd love to hear all the details. How long is the dive expected to last, and how far are you planning on drifting? I can imagine a hypothetical river with a gradient of 100'/mile (about 20m/km) that's only class 2, but it would be really ripping right along. I'd expect most class 2 or 3 rivers...

Before you commit to that, you know that the 10L cylinder at the link in post #10 is a cylinder that contains 10L, not a cylinder with a volume of 10L? It's roughly the size of a can of spray paint, so if you try hard you can probably fit it in the house. For some reason, the 17L cylinder...

I'll tell you what. In the very unlikely event that we ever dive together, if you have a mishap and I think there's even a tiny chance you might be dead I'll leave the body for the police. After all, I'm not a doctor so I can't pronounce you alive. But there was never a proper investigation...

It must be hell having to use a lidar every time you pull into traffic. How early do you get up to have it calibrated every morning?

That's a good rule that I'd think was obvious before this incident. I can understand a lot of divers being a bit complacent, but this involved a bunch of cave divers. People who should be thoroughly anal about things, because just one little thing going wrong may kill you. I would humbly...

I would hope that every dive computer does that or locks you out. Accurately tracking (theoretical )N2 load from the very beginning of the first dive until you've completely outgassed, whether you do subsequent dives or not, is a rather important function for a dive computer. Whether I went...

If I don't pee a couple of times during a one hour dive in the tropics I figure I must be dehydrated.

Of course they do. The market for them is huge.

Never mind how much she has when he runs out. Do they know what they're starting with? I've seen AL 80's filled to at least 3300 and I've seen them at least as low as 2700, though I suppose that the norm is that any two tanks grabbed at the same time will tend to be close, with the wide spreads...

Whether it's scuba or something else, almost every serious accident is the result of a chain of events where removing any single deficiency would likely have prevented the bad outcome that results from the uninterrupted chain. Solo or not, recognizing the little problems and fixing them is a...

Would you suggest that all of the auto makers sell only cars that cost $50,000 and more? The percentage of people who will pay $1000 or more for an OW course is akin to the percentage of people who will (or can) buy expensive cars. Some providers can cater to that segment of the market, but that...

A smaller cross section and a corrugated wall will certainly offer more resistance than a large cross section and a smooth wall, but does it matter? The trachea has a cross section of about 0.4 square inches, very nearly equivalent to a round snorkel with a diameter of 5/8". It's also lined with...

Are you saying that it doesn't hurt until you take off the mask? If so, perhaps you just don't notice until after taking the mask off? When you say "in the nose" and between the eyes I'm thinking it's some kind of issue with your sinuses. If it's definitely related to getting water up your...

When I was young and foolish I used to buy into the nonsense about dying while doing something you love. Now that I'm older and wiser I've decided that my main criteria is to die quickly and painlessly. What I'm actualy doing isn't really important, other than a preference to spend as much...

I've heard some similar stories (along with stories of being calm but very sad), but none of the people telling those stories know how they would have felt 30 or 60 seconds later. I've also heard that almost drowning can be very unpleasant. Unfortunately for our inquiries, the people who finish...

Some of the newer cameras have UW settings that help, but there's very little red light as you get deeper, so everything starts looking more and more blue. Even if you don't notice it with your eyes, it's very evident when you look at the pictures later on. Because the onboad flash is very close...

As a duly licensed member of the language police, I submit that "training and experience" is a single thing. It's the sum of your training and your experience. If you've got an OW cert that never took you deeper than 40' in clear calm water, and you've now racked up 50 dives, including a bunch...

Besides the simple factor of time, I think a lot depends on how much you dive during the periods that you do go diving, especially when you're new. Everybody's a bit different, but I think most people would be better off doing 10 or 12 dives shortly after getting certified and then waiting 10...