Conducting range-azimuth hydrography at Pelican Cay.All of the elements of range-azimuth.Observer tracking boat with Wild T-2 theodolite.Party off of WHITING
3/20/2019 12:35:29 PM
Date: 1975
Credit: Captain Albert E. Theberge, NOAA Corps (ret.)
Location: Pelican Cay, U.S. Virgin Islands
Subject: Charting
Subject: Navigation
Subject: Electronic
Subject: SHF Systems