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CHK BOONE <chkboone@ao*.co*> writes:
> ...   5 starts to up the task load of managing
> the team to the point of diminishing returns; communication becomes time
> consuming because it takes longer to get the message to everyone in the team

Chuck, three of the five are up on the surface where they can talk to
each other; only two are in the water.  Rope pull signals are used for
divers and tenders to communicate.

Ice-diving the way NAUI teaches it involves two divers, each with a
tether shackled to a safety harness, tended by a surface tender.  A
safety diver is suited up ready to go in, with a third rope 1.5 times the
length of the other two.  He will enter only if one or both diver lines
are snagged or broken, so there will be a tender available to tend his
line.

Anyway, that's why you'll hear ice divers talking about getting the
minimum five guys together so they can go ice diving.

-- 
Anthony DeBoer <adb@on*.ca*>
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