We use GPS to locate dive sites for research...my information may be dated,
but the best accuracy is +/- 3 meters or 9 feet....that is optimal if the
satellite input is not being scrambled by the military...we seldom hit
within this eighteen foot circle while on a boat...but it may be adequate
for your purposes...
Phillip Buttolph
Diving Safety Officer
Humboldt State University Arcata, CA 95521
(707) 826-4104
62' Sateen Silver Corvette
"That isn't Duct or Duck Tape; it is Sateen Silver Racing Tape!"
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