Monark outfitted for hydrography in Indian River Inlet, Delaware coast.
Motorola Miniranger secured on mast and covered with red flagging.
Boat was being used for range-azimuth hydrography.
Detached party from NOAA Ship PEIRCE
Image ID: theb1489, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection Location: Indian River Inlet, Delaware coast Photo Date: May 1984 Credit: Personnel of NOAA Ship PEIRCE 1984