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From personal experience, you can just barely do the whole dive submerged on a single tank. And by "just barely" I mean make the 20min swim out, spend about one minute on the wreck, make the 20min swim back in, and finish with about 5-700 left in the tank. On the other hand, given the...

While out diving a small, cottage-surrounded, lake we happened to swim past a couple of golf-balls. I was feeling a little silly, and since we weren't on any sort of achieve-the-objective dive, just putting in some U/W time and having fun, on a "I wonder if I can..." I started juggling them. A...

Meh, first time in weeks (curses on school!) that I get on the board, and all of a sudden there's a whole bunch of local types doing regular dives... Is there room for another one for tomorrow (thursday's) dive, assuming you're still planning on one? Contact info: a) PM me here b) call...

Congrats on the new job. -- Jamie

Back when I first hit university, they gave me the userid jrtonkin, as first initial (for Jamie), second initial (for Robert), last name (Tonkin)... I've pretty much stuck with it ever since, and in a wonder, there don't actually seem to be many others on the net at large using the same name...

Ahhh... I hadn't been told that it was, but if so, that's certainly a very good reason not to go to the surface... Thanks, Jamie

Why not? You've got a straight shot to the surface if you mis-guess how much air you'll need, as long as you respect NDLs to keep that a viable option. So there's no overhead (hard, shipping, or physiological) that would call for the increased redundancy (Which isin't to say that...

Man, I've got to get a bigger tank... On an AL80, I can just make it out to the first hull, but I get all of a minute or so to poke around before I have to head back. Jamie

If I can find someone from Toronto-area I can get a lift with, I'm in for some friday fun. Or, if there's a few of us vehicle-challenged, and we want to split the cost of a rental, that could work too. Jamie

Well, according to a quick google search on "density of concrete", (1.75 to 2.4 times that of water), and a bit of math, it'll weigh between 0.42 to 0.58 of it's dry-land weight. Put me on the volunteer list to help rig this up though. Jamie

Well, I don't quite qualify as a midget, but I'll try to make it across town for the fun... Have we got a when and where yet? Jamie

So what are the odds of there being anything liquid around Easter? I'll be out visiting my parents in Calgary, and may need to run away from my family for a few hours :) Jamie

So when and where is the amusement happening? I may be able to sneak away from the family for a bit, and I've got this new camera to try out :) Jamie

Ummm... I'm not certain what you're asking. There's lots of other manufacturers of digital camera, many of which are of the no-knowledge-required-point-and-shoot type. Canon, Olympus, Nikon, Fujitsu, Kodak, Samsung (I think), Panasonic... I believe all of these manufacturers have basic...

Nope, the speed of light isin't a constant. It varies with the material being travelled through. (Ok, it's a bit more complicated than that, but for our purposes, we'll treat it as though it's just a property of the material) The commonly quoted speed of 186000 miles/sec is the speed in a...

I think you've switched your numbers around... Objects appear 33% larger (which is 4/3 magnification), or 25% closer. To see how the math works, consider an object that's 3 meters tall, and 4m away from you. If it looked 33% larger, it would look 4m (33% of 3m is 1m, added to the 3m of...

And hey, depending on where you are in Toronto, it's actually closer than a 2 hour drive. It's about 90 minutes... :-/ I've seen some OMS stuff in "Dean's Sport and Dive" in Kitchener. Jamie

... you have to shovel off the truck after the dive? But it looks like we (myself and Robin) will be heading down to K-town this weekend. She's even promised she'll "consider" diving, if it's not too cold out. Jamie

If I can get a ride up with you (from Mississauga, or somewhere TTC-able), and if we can stop at a shop (don't care which one) so I can rent a tank and regs... But if you're still interested and looking for people, I'm in. PM me to arrange meeting times and contact-info, I guess? Jamie

Hmmm.... Wonder if you could wear that '63 for ballast when sailing. Afterall, it's not like it'd contribute to drowning if /when you did bail :) And 40 extra pounds out on the trapeeze has to be a good thing. Although, on the whole air-shut-off, and surprise-mask-removals, and all...