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  1. lamont

    Student lost - Seattle, Washington

    The existence of this thread is the indication that the industry has legitimate safety problem. Most of the divers who have died at this site over the years has been due to inexperience and really basic mistakes. There seems to be one about every 4 years or so. You might view that as...
  2. lamont

    Student lost - Seattle, Washington

    That's because some of us think AOWs are a bit of a joke and the whole series of courses should be in the OW course, like it used to be. And I'm basing that on the inexperienced divers that I've taken out at cove 2 with less than ~50 dives or so, and I don't think anyone should be doing that...
  3. lamont

    Student lost - Seattle, Washington

    If that's a snap from the dive operation the next day and roughly where she was found then that is maybe 200 feet from the honeybear and pretty straight out from where the ladder truck was. It is also right along the typical route that divers travel to get to the honeybear using the rope trail...
  4. lamont

    Student lost - Seattle, Washington

    I've tried and stuck my head in there as far as I could go. Very hard to get into any significant trouble with the honey bear that any old piece of junk underwater couldn't cause.
  5. lamont

    Two German divers drown at Gran Cenote Kalimba at Tulum

    Pretty sure I've done single stage dives coming from Grand up the PDL line which have been over 120 minutes without violating thirds at all. I thought the average depth of the cave there was no deeper than 25 ft or so, which gives me a total runtime of 151 minutes on 2 Al80s consumed with a...
  6. lamont

    Rebreather diver dies in 6 feet of water - Cyprus

    The valve is just a normal valve on a scuba bottle. You could route off board O2 into your MAV or you could come up with some kind of additional in-line valve to shut down the leaky valve. But now you've just added more complexity (and you're even more likely to dive with the MAV on and the...
  7. lamont

    Rebreather diver dies in 6 feet of water - Cyprus

    It isn't though. You have to turn your O2 off or the valve leaks constantly above water the whole time you are gearing up (and if your valve knob gets bumped in the back of the truck and rolls on a crack it'll drain your whole tank). That means you typically shut down your O2 after you've done...
  8. lamont

    Filmmaker Rob Stewart dies off Alligator Reef

    And is there any actual evidence in this thread (sorry there's 30 pages of it now that I haven't read and I think I ox-toxed trying to read half of it) that points to hypoxic bailout or the DSV/counterlungs killing him due to flooding? It still sounds like this was a third dive to retrieve the...
  9. lamont

    Filmmaker Rob Stewart dies off Alligator Reef

    This is taking the wrong lesson from team diving. If you have team separation now compiled with a rebreather problem, then you have insufficient bailout and you're dead. Reminds me of Program Managers who learn about Agile methodology and what they start doing is hour long morning standup...
  10. lamont

    Filmmaker Rob Stewart dies off Alligator Reef

    A diver who is close to neutral on the surface is going to be heavily negative on the bottom as everything compresses. Try sinking to 220 feet without adding any gas to your drysuit. Anecdotally none of the bodies we've lost around here have floated to the surface that we're aware of. Ones...
  11. lamont

    Filmmaker Rob Stewart dies off Alligator Reef

    Gas embolism due to DCS could easily cause unconsciousness at the surface -- and the diver would likely have a minute or two when they felt okay before they were disabled. Also if his BOV/DSV wasn't closed when he went unconscious his loop could have flooded and made him negative and pulled him...
  12. lamont

    Filmmaker Rob Stewart dies off Alligator Reef

    I can come up with a simple way to general simultaneous failures provided they were both following the same protocols. Since it was the third and last dive of the day it makes it more likely that they were low on scrubber and/or onboard O2 and dil. Also if it was a bounce dive "just to remove...
  13. lamont

    Filmmaker Rob Stewart dies off Alligator Reef

    If both divers had run out of higher percentage O2 (possibly due to bailing out) and were on hypoxic diluent (either with or without a functioning RB) then there could have been a situation where both of them would have had to try to do a blow-and-go from 20 feet to the surface with hypoxic gas...
  14. lamont

    Filmmaker Rob Stewart dies off Alligator Reef

    That is another assumption. All it takes to be filmed whist filming on a CCR is being CCR trained plus having another video camera to use. If you're aggressive enough then you can take that video literally the day after you're first CCR certified (not really wise to do that because your...
  15. lamont

    Filmmaker Rob Stewart dies off Alligator Reef

    CO would kill both of them on the bottom. As they descend they have to add dil (which is presumably where the CO comes from) and the ambient pressure would increase their pCO just like it increases ppO2 and the highest concentration and largest effects would be on the bottom, also once they're...
  16. lamont

    Ccr Diver From Ohio Died In Ginnie Springs Today...

    I've had CO2 issues due to overexertion on OC. Chasing after a buddy with long legs and big fins in a cave class. We dropped down to 70-ish feet at one point so I got a bit of a narc on, and the instructors watched my perceptual awareness narrow and then threw some **** at us and we completely...
  17. lamont

    TSandM: Missing Diver in Clallam County, WA

    Well, I seriously doubt any of that. Horses, not Zebras.
  18. lamont

    Cave 1 - 3 vs Tech 1 - 3

    Now there's some usernames that I haven't read in a long time.... a long time...
  19. lamont

    TSandM: Missing Diver in Clallam County, WA

    Speaking from experience with our local dive site which sees the bulk of the fatalities, generally dead divers wind up on the bottom, not on the surface (although one of the two events I was involved in the diver was on the surface, but she was conscious on the surface for a minute or two before...
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