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Bob writes:
>
...
>
>If all the divers have widely different profiles, the wreck is large,
>and visibility is poor how are you sure your the "last diver".
>
>NOTE: I've never made a planned decompression dive.
>
>Bob
>

Generally the anchor is both tied in and released by one of the mates, who
works on the boat typically for tips plus the free diving.  They will
tie in the anchor, and then release either a tennis ball, or a 
styrofoam coffee cup, to signal that it is tied in all right.  They can
then get in their own dive.

Their second dive will be just an abbreviated dive to release the anchor,
after all the other divers are on board.  Occasionally I have seen, in
good weather, on a boat where everyone knows everyone, one of the more
experienced paying customers unhook the anchor by prior arrangement.  They
can then complete their hangs on the line while the boat drifts.

Safe Diving

Wrolf

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