Beach party crew and the Cartographer take azimuth readings to determine the hydrographic reconnaissance base line bearing for conducting the hydro recon. Platoon Chief stands ready to assist.
UDT-12 2nd platoon Chief takes compass bearings to re-align the beach flags as the hydro recon dog-legs around the beach obstacle. Swimmers get a short break on the beach in the meantime.
UDT-12 2nd Platoon Frogmen conduct an administrative perpendicular hydrographic reconnaissance of a beach in the Philippines. Beach party hold flags on the beach so swimmers in the water can align in a straight line.