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Thanks, Joe.  Diving here is essentially current (and scooter) free, and
procedures used reflect that.  Normally we would drop a shot weighing about
20kg, tethered to a 1m diameter buoy.  The boat stays free.  Last pair up
partially inflate a lift bag attached to the shot to ease its recovery.
When I read your original post I immediately conjured up a vision of
somebody swimming up a 20 kg weight ;-).  Didn't seem right, hence the
question.  Still, if you don't ask nobody gets to call ya dumb.

I will give your system a go, next chance.

Mark

----- Original Message -----
From: <joe@po*.co*>
To: "Mark&Laura" <marklora@om*.ne*.om*>; <techdiver@aquanaut.com>
Sent: 27 July 2002 09:14
Subject: Re: Nova Tech Dive Report 7/21/02 & Lessons Learned


> Mark:
>
> We use a small grapple and the chain is about 6 or 8 ft.  I've never
weighed
> it but I would guess it is about 10 or 15 lbs. total weight.  I will
> typically use a scooter, but you can inflate your wings to offset the
> weight.
>
> If you drop the grapple and chain you simply dump air.  Of course you will
> be a Polaris missle if you don't -  but as soon as you release the weight
of
> the grapple you begin to dump air.  Done properly, you shouldn't lose or
> gain any depth to speak of.  Obviously, you don't assign this chore to a
> "newbie" but it is a simple procedure.
>
> Regards.
>
> Joe
>
>
>
> ----- Original Message -----
> From: "Mark&Laura" <marklora@om*.ne*.om*>
> To: <techdiver@aquanaut.com>
> Sent: Saturday, July 27, 2002 11:30 AM
> Subject: Re: Nova Tech Dive Report 7/21/02 & Lessons Learned
>
>
> >
> > > As soon as the hook (or chain or whatever) is freed the man standing
by
> > > ascends ahead of the man swimming or scootering the hook and goes
about
> > 100'
> > > off the bottom (or whatever depth is appropriate for the given dive)
and
> > > ties a loop in the line.  The hook is then fowled in it.
> >
> > Joe,
> >
> > The procedure you describe sounds sweet - I'll file it away for future
> use.
> > However, couple of questions.  How
> > much does the grapple and chain (if used) weigh?  On the descent, and
> > particularly when ascending up to the loop where the grapple is to be
> > fouled, the team member carrying the grapple will be using his own BC or
> > wing to counteract the weight of the grapple, yes/no?  Or have I
> > misunderstood?
> > If yes, then for argument sake, lets say he drops it.  Is the immediate
> > excess buoyancy
> > going to be a problem?
> >
> > Regards,
> >
> > Mark.
> >
> >
> > --
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> >
> >
>
> --
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