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Chuck Gould Chuck Gould is offline
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First recorded activity by BoatBanter: Jul 2006
Posts: 3,117
Default Is there some technology to help locate divers?

On Oct 7, 9:45?pm, "Fred Garvin, Male Prostitute"
wrote:
In oglegroups.com, Chuck
Gould sprach forth the following:

shouldn't there be some sort of small EPIRB or other emergency device
that a diver could cut loose and let rise to the surface?


Which would then drift somewhere that the diver isn't.


Very simply accounted for.

The EPIRB begins sending a signal at xx.xx.xxN, xx.xx.xxW at 1400
hours.

If S&R can pick up the signal when it *first* begins broadcasting,
that will
show just where the incident occured. If the diver isn't trapped, he
may be drifting in the water column at about the same speed as the
EPIRB.
If the wind is blowing, that will set the EPIRB off in a direction
that the diver is *unlikely* to drift.

Current can be fairly reliably predicted, and if wind is accurately
measured at the time a computerized formula should be able to
accurately forecast where the EPIRB will be at 1405, 1410, etc........
and by working back upstream
figure out where it would have been at 1355, 1350, etc.

A lengthier version of the same item noted that S&R was working a very
large area, several miles on a side. Even if the EPIRB idea wasn't
perfect, getting S*R closer to the actual scene would improve the odds
a lot. IMO