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Many thanks for this mail. In Britain we usually use an alternative
to he so called Jersey method.
We do dot attach the line to the wreck and assend but reel it in on the way
up and hang of the reel at the deco stops. The probblem of the current
is illiminated as you drift with it and the boat follows the delayed
decompression bouy on the surface until you surface.
Curts wrote
>The force of the current on the diver is independent of the suspension
>force on the line.
I do not dissagree with this statement if the current is in a horizontal
direction... however when the diver clips onto the line he will present a
surface area to this current and if the line is anchored this will cause a
pendulum effect either pulling him up or down dependent upon where the
anchor point is.
Hence the value of the Delayed Decompression Bouy method used here, or
course you have to make sure that you are not going to be swept into
a whirlpool etc etc.
We use the great lakes verision to show the surface boat and next set
of divers where the wreck is after the first pair have found, or the
interestingpart of it.
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_/_/_/ _/_/_/ _/_/_/_/ tow@uk*.ac*.nb*.ua*
_/ _/ _/ _/ _/ _/ PROUDMAN OCEANOGRAPHIC LABORATORY
_/ _/ _/ _/ _/ BIDSTON,MERSEYSIDE
_/ _/_/_/ _/ _/ ENGLAND. L43 7RA
I have to go down to the sea again, to the call of the running tide
Tis a wild call but a clear call, that cannot be denied.
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