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Aloha barrie,

having some experience in a similar situation i would suggest (if i may)
that you have some really good surface support and communications with
them in case they have to pulll you out.. also have separate lines attached
to your camera equipemnt so they can retrive it as well if it gets away
from you..

sounds like a blast, would like to see the product, hell, wold love to go 
with you!!!

good luck,

dennis


On Tue, 21 Nov 1995 bmk@ds*.bc*.ca* wrote:

> So many people have asked me what I want to use ascenders for underwater 
> that I thought it would be easier to post the reply to the list.  Here's 
> the story.  I know a spot below a dam where chinook and stealhead salmon
> concentrate during August.  I would like to photograph these fish.  The 
> blast from the dam has dug a crater and thrown up a berm.  The fish seem
> to like the inside of the crater.  However there is quite a current in 
> this crater.  The current runs both out of the crater and into it!  
> The problem then is to get myself and my camera gear into the crater 
> ( and out! ) and provide a stable platform from which to operate the camera.
> My plan is to run a line along the lee side of the berm and then into the 
> crater.  I will then use the line to aid and protect my entrance and exit
> from the crater as well as provide an anchor point for operating the 
> camera.  With a camera in hand I will probably need some mechanical 
> assistance to move and anchor on the rope.  Hence the need for ascenders.
> The problems I see are 1. I don't want to throw the ascenders away after 
> the first use in water.  2.  Since the current can run in either direction
> the ascenders will need to be able to grip in either direction.  3. The 
> water is cold ( 5C? ) so I will need to be able to operate the ascenders 
> with a gloved hand.  4.  I would like to use the thinnest rope possible.
> 5.  How to attach the ascenders to my diving rig so that I can operate them.
> 
> Beyond the above use of the ascenders there are several potholes I would like
> to dive that are protected by rather slimy looking walls.  However this is 
> more of a standard climbing use of ascenders.
> 
> Barrie Kovish
> Vancouver
> 
> --
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