As noted, navigation underwater is pretty primitive.
To elaborate on what Joe has said, if you know the two end points you try to
dry between them moving with the current. Remember that surface current and
bottom current is often different and in deep water there may even be another
directional current mid-depth.
If you don’t know the end points but
know the orientation (if it has some length) and approximate location, search
theory states the most likelihood of finding your target is to try to cross it
at a 90 deg. angle.
R/Jay
From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of Joseph Perkel
Sent: Saturday, April 08, 2006
2:53 PM
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST]
Acoustic Triangulation
Sean,
"two positions in the log, defining the fore and aft
extents of the wreck."
Amazing how the simplest of solutions elude a person,...that
never occurred to me. I suppose you pick up little tricks like that the more
serious your diving becomes. I became certified in 1977 but, never ventured
into anything more serious than shallow wrecks and reefs, in S.
Florida, you have a lot to see in the no decomp range. Neat trick!
Joe
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