As a scuba diver I can speak on underwater navigation a lot and have tested a lot of systems that approach it in different ways... Not sure of any gravimetric based systems though, doesnt mean they dont exist I just cant speak on that specifically.
As a scuba diver I can speak on underwater navigation a lot and have tested a lot of systems that approach it in different ways... Not sure of any gravimetric based systems though, doesnt mean they dont exist I just cant speak on that specifically.
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