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On Wed, 21 Sep 1994, James Green wrote:
> It is interesting how divers in different parts of the world do things:
>
>
> When diving in the UK on decompression dives or dives of any depth it is
> normal to carry a delayed SMB and reel. If the shot line cannot be
> found for the return to the surface then the delayed SMB is deployed by
> cliping it to the reel then inflating it (taking care to hold on th the
> reel) . The buddy pair then reel there way up the line and can perform
> a deco stop with slight negative bouyancy for comfort. Stops of this
> type can be very comfortable also because you move along with the
> current.
> Some UK divers deploy a delayed SMB without a reel. Their SMB has
> 9meters of line on it and a small weight as the other end. They deploy
> in at about 9meters having done the rest of there asent with no shot
> line etc.
> We always dive with boat cover in the UK i.e. there is someone in the
> boat ready to follow the SMB you send up.
>
>
>
>
> --James
>
The main problem I have with this method is that the diver is free
floating and it requires that the boat crew see and follow the diver.
There are many senarios where this could result in problems:
1. Mooring line for boat breaks with boat drifting away not noticed
by crew. Where do you search for diver?
2. Multiple divers in the water and only one ascending off the
mooring and/or you do not know if the others are making free ascents.
This will usually put at least one diver at risks.
I could generate other scenarios however I think this illustrates why
it's best to have the diver maintained in a fixed and known location when
making any type of ascent.
Curt
===========================================================================
Curt W. Smitka, Administrative Manager Phone: (313) 936-0702
Department of Environmental Fax: (313) 764-9424
and Industrial Health E-mail: CWSMITKA@SP*.UM*.ED*
School of Public Health
University of Michigan
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