Sea Floor Mapping

[smithers]

Originally Posted by Yakin

How accurate is the positioning meaning if it says i am right on top of the structure u are really on top of it or like a 1/4 mile off?

My droid seems to be accurate to around 20 feet or better.

It has a calibrate function which you should check for on yours; basically a routine where you turn the phone through a set of rotations while it watches signals.