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From: J Shepherd <jms@ta*.ed*.ac*.uk*>
Subject: Re: liftbag deployment
To: michael.holmes@sg*.co*
Cc: techdiver@terra.net
Date: Mon, 29 Apr 96 16:31:28 BST
> Eric said...
> 
> 
> > cos if you got a reel jam as it goes, that's bye-bye liftbag or hello 
> embolism.
> 
> 
> One way around this is to have a second reel clipped to the first. 
> The bag goes up using the primary reel. If it jams, you quickly 
> switch to the second reel, letting the jammed reel go up with the 
> bag.
> 
> If this jams as well, you might as well give up :-) and go and find 
> the shot line.


	How deep are you guys talking about diving when using a system
like this? How deep are your stops? *Two* reels, even those dinky little
diverite jobs, is a hell of a bundle of trouble to lug around.

	I saw a diver take this lot once; a typical techie IME, twin
10s, more regs and gauges and hoses and tat than you could shake a stick
at. Two (different) computers. He tried to explain why he had this twin
reel and a big bag arrangement. We were diving to 35m, max 15mins stops,
max stop depth 9m.

	IMO, and some experience of using lines in open water
situations, the more you carry the more trouble you are already in.
Unless the lines are there as part of the dive purpose (scientific work
or surveying, or laying line for later navigation use such as American
cave divers do, or to significantly oimprove on dive safety such as
penetration work) then leave them at home. As I pointed out to this
fellow, they look sexy when you kit up on the boat but they look a whole
lot less sexy wrapped round your legs as you climb in. (If you get that far).

	And as someone pointed out to me on an argument about ponies,
unless it's very simple, you can be assured of leaving it at home the
one day you really need it.

	Jason

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