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Kevin Connell wrote: > > I'm definitly NOT arguing this in any way, I don't proclaim to know anything. > > However, this may be of interest. > > In the IANTD 1996 standards manual, waterskill #4 for the trimix diver is > as follows: (Not direct quote for fear of lawsuit:) > > #4) [While in a simulated blackout remove deco bottles and swim 15 feet > away. Turn around and return to replace bottles on correct side, > identifying by feel.] > > So, is this skill useful? Why or why not? I personally think even in a > silt out, you will still have daylight or artificial light enough to > identify bottles by sight. > Kevin, Where do you guys dive where this is necessary, meaning you don't have the 2 feet visibility necessary to check the paiting on the bottle ? A light failure is out of the question since you should have between 6 and 9 lights to use, depending on the size of the team, and the probability that none are working, would be as good as non-existent. The room for a fuck-up is when the marking is not "permanent" enough, meaning it's too damn easy to put the reg on the wrogn bottle when regs are marked or labeled. Having both regs and bottles marked is even crazier. It's like the the parable about watches: "A man who has one watch knows what time it is, the man who has two watches is never sure" Modify what George say about bottle marking to something you can feel. The bottles are hard to screw up on becuase you look at them for a hour while you;re mixing. The reg mouting process is 30 secs or less. What would I do if I dove in an environment that deco was done in no-viz ?, come up with a scheme for touch-feel marking that;s INTELIGENT, and well-thought out. Put loops of rope around the neck of the tank FOR EXAMPLE, the less loops the higher O2 content. In that way if a loop falls off, you won't get killed toxing, you'll just get bent. The rope can of course also be cut away if an entanglement should occur. But even with this scheme, the fact that other people might need to breathe off your decobotttle, whether it's planned or not, is a big problem. If they don't know your scheme, their fucked. The value of my suggestion must be viewed keeping in mind I thought it up in 2 mins. Spend a lifetime like Hogarth and it'll be good :) My two cents, (and some pocket change too) Marius Bratrein -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send list subscription requests to `techdiver-request@aquanaut.com'.
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