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From: "Richard Hayward" <hddiver@bi*.co*>
To: "techdiver" <techdiver@aquanaut.com>
Subject: karabiners and such
Date: Fri, 16 Oct 1998 21:06:26 -0700
Climbing karabiners also come in locking and non locking, I use the locking
ones for commercial work, for guys using these in very cold climates (ie
freezing) put some tape over the locking mechanism before you go into the
water this will keep it from freezing shut when you get to the surface.

 If you want to use non locking ones for equipment haul up, use two non
locking karabiners with the gates opening in opposite directions of each
other on the same side. this will keep them from coming off or at least make
the risk extremely small. I use these types all winter long for ice climbing
and all summer for rock climbing. You can also get oversized aluminum
karabiners with high break strengths for use with gloves, in Canada check
Mountain Equipment Co-Op in the States I do not have a clue but any
mountainering store will have them.

It is easy to build your own tethers with 1 inch tube I stress tube webbing
bought in bulk, and then use a water not to secure the end to the karabiner.
Make them any length you want.

Like said before stainless is the way to go, if you can find a stainless
karabiner somewhere let me know I will be happy if I can get my hands on
some.

Richard Hayward
HD Diving Systems & Services
Sault Ste. Marie, Ontario, Canada

-----Original Message-----
From: Kent Lind <Kent.Lind@no*.go*>
To: techdiver@aquanaut.com <techdiver@aquanaut.com>
Date: Friday, October 16, 1998 05:12 PM
Subject: Re: Tech meeting, equipment lines


>
>Guys, if you are looking for secure snaps or shackles for securing
>gear to equipment lines ON THE SURFACE then look at the type of snaps
>that come on jack lines or safety harness tethers.  West Marine and
>other yachting type stores have a large selection of these type of snaps
and
>lines.  Offshore sailors snap into safety lines so they don't get
>washed overboard and lost.  My West Marine catalog shows webbing jack
>lines with large stainless steel carabiners sewn into one end in lengths
>from 25' to 75' and they have all sorts of other safety tethers with snap
>shackles, snap hooks and double-gated Gibb snap hooks.  This stuff is
>lifesaving gear on sailboats and is way more than adequate to secure
>your precious set of doubles.  They even show some safety tethers
>with elastic sections built into the webbing which might be a good idea
>for clipping off gear in heavy seas.  There's basically a proportionate
>relationship between the degree of security and the ease of release.  Snap
>shackles are very easy to release but are less secure.  Gibb snaps are
>very secure but will be more difficult to release under load and with
>one gloved hand.
>
>As for climbing carabiners.  I happen to be using standard climbing
>carabiners on my jon lines and to clip off the running line that runs
>between my anchor line and the deco station at the stern of my boat.
>They seem to work fine underwater and are nice for jon lines because
>you can take them off the line if you want to double it up.  They are
>easier to handle with mits than the standard SS carabiners.  They
>do corrode eventually if you don't keep them rinsed and dry.  Climbing
>carabiners are built from lightweight alloys because weight is a critical
>factor if you are hanging 1000' up on a rock with all sorts of hardware
>hanging off your harness.  Stainless steel carabiners would be too heavy
>for climbing use.  However, in the marine environment weight is not a
>factor so there is no reason not to use corrosion proof stainless steel
>equipment.  The only reason I use the climbing carabiners is because I
>have a pile of them in the garage from my climbing days.  For stages
>I use the regular stainless steel bolt snaps
>
>-Kent-
>
>Paltz, Art wrote:
>>
>> I agree Dave,
>>
>> I don't doubt that it can be done, Yes I've had to do it myself.  My
>> only comment is that if you don't have to then don't.  If there are
>> shackles, bolt snaps, clips or whatever out there that don't require
>> this, then use them.  Why use something that you'd have to take your
>> gloves off for?  I know the wrecks in the NE are sharp, sliced many
>> gloves.  I hate having to take them off when on a wreck (like fooling
>> with an anchor shackle).  The last thing you want to do is slice open
>> your hand on a wreck.
>>
>> Art.
>--
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