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  1. Jonn

    Training fatality after Instructor held student down - Stoney Cove, UK

    So if “not guilty” isn’t quite good enough for you, what IS innocent? Do you expect the judge to exclaim how awesome a guy this defendant is, and how he’s a totally great diver who did everything right, and how the prosecution was dumb for even going this far? IANAL but I don’t think judges work...
  2. Jonn

    Training fatality after Instructor held student down - Stoney Cove, UK

    The cocaine was very naughty but I don’t see the relevance. Not disclosing diagnosed hypertension was worse but there’s plenty of unhealthier divers around. Sounds like this was another “fatality while scuba diving” instead of a scuba fatality, sort of like a heart attack or stroke. Your buddy...
  3. Jonn

    Suit filed in case of "Girl dead, boy injured at Glacier National Park

    So as a rando diver, I can show up at a cattle boat and be assigned an instabuddy, and suddenly I’m burdened with some legal responsibility for their conduct underwater?! That’s heavy. I’ll try and keep them in sight but I can’t really control what they do.
  4. Jonn

    Wet suit heating system prototype with modular design (photos included)

    Sounds like a solid setup. Might not be life-support reliable but having the power source external and manually disconnectable is the saving grace. Not enough power to burn or electrocute you before you can react to it. Would not want a self contained system inside the suit no matter how solid...
  5. Jonn

    Do you count weight of regulator?

    Those calculations are “how much lead should I pack in the car”, not “how much lead should I wear in the water”. You bring a few pounds more than you’ll ever need and dial it in on the check dive. The easy low-pressure shore dive that you totally do before the boat dive, right? Little things...
  6. Jonn

    1/2 Pound Weights

    Ankle weights are usually used for fine trim. Made of tubular nylon webbing with shot inside, sealed with plastic buckles at the ends. DIY but no sewing required: just cut the nylon, melt the ends with a lighter, thread through one buckle, fill the webbing with shot, and thread through other...
  7. Jonn

    Non-steel, non-aluminum scuba tanks

    Maybe. It’s cool to have a working antique like that but I just use it for tires and air tools, I might not value it like you do. I’d let it go for $300CDN, but you’d have to figure out shipping and customs and stuff. Comes with a shiny chrome J-valve, can certainly take more pics if you want.
  8. Jonn

    Non-steel, non-aluminum scuba tanks

    Would a half century really be too much to ask? Or a full one or more? This low pressure steel has six little feet forged into the bottom so it stands without a boot, nifty feature.
  9. Jonn

    Loud BANG, lots of bubbles

    What a great practice! Not what you were planning but it was a ‘perfect failure’. You could have done better, that will always be true, but having this experience in a relatively safe environment made you a better diver than you were yesterday. Why were you using such a rich mix though?! Safe...
  10. Jonn

    Pop up Ads

    Just uninstalled Adblock Plus and am trying Ghostery. It does address this issue, so happy about that. Appears to be subscription based and I wouldn’t be averse to paying something but not clear what I would be buying.
  11. Jonn

    Pop up Ads

    I too have felt this scourge despite being a paid supporter. It’s “Ads by Google”, a floating banner. Sometimes divers have to tolerate reduced visibility but we’re willing to pay a bit to travel elsewhere and see further…
  12. Jonn

    Bad breathing gas on liveaboard trip

    Most fill stations I’ve used have some inline monitor plumbed into the system. I assume it’s looking for CO, and will sound an alarm if it smells any? (Not experienced with these things, I just pay for the service and trust them to provide it) Is that not a common feature on liveaboard...
  13. Jonn

    Mask Search - Alternative to Omer Alien

    You ordered in four masks just to try them on?! Even if you live inland your dive travels will take you past any number of big dive shops. Drop in and try on every mask hanging on their big wall of masks. You can do one every five seconds or so, 200 in 15 min. The perfect mask to fit your mutant...
  14. Jonn

    Bad breathing gas on liveaboard trip

    Random small molecules responsible for a bad smell are a problem, but it’s odourless monoxide that will actually kill you. Did the capability to test for it exist on the boat? That’s the sort of thing a commercial fill station (like this totally is!) should be able to do… As for fixing the...
  15. Jonn

    Info Dive incident in Portugal - Ponta Delgada

    It sounds like the diving, the covid, and the heart attack were unrelated, only coincidentally occurring at the same time. Is this plausible? What link might there be between them? Sorry for the loss too, of course.
  16. Jonn

    LP120 doubles

    Double 120s are what rebreathers exist to replace.
  17. Jonn

    Computers and backups - looking for pearls of wisdom from the more experienced

    It’s an extra hose on my reg. (If I admit I dive an integrated octo I’ll get more flak here, so don’t tell anyone, but I don’t like extra hoses…) There’s also the battery: I’ve had a great deal of bad luck changing batteries on PPS computers and am reluctant to waste their charge. As you say it...
  18. Jonn

    Computers and backups - looking for pearls of wisdom from the more experienced

    That’s a good point. Of course a backup computer I don’t take with me every dive will not have current tissue data and will not be able to protect me. In the unlikely event of my primary computer failing I would be faced with skipping a day of diving until I was completely desaturated before...
  19. Jonn

    Best Dive Jackets

    A jacket is nice for Pacific Northwest diving in the winter, when there’s good vis. Needs to fit over my bulky drysuit, doesn’t need particularly high performance otherwise. Don’t care if it doesn’t work as well when wet or looks rough, just need something to cut the wind a bit. Thrift store can...
  20. Jonn

    Altitude diving for a "knock-off" dive

    What do you mean he was faking stops with his Perdix? Doesn’t the computer know what the surface pressure is and adjust accordingly? I recall there was a bug like that in one of the early nitrox computers: it kept calculating as if you were still breathing enriched during your surface interval...
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