Vincent type sono-radio-buoy being deployed from the GUIDE.
RAR operations on north coast of Unimak Island
Image ID: theb2265, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection
Location: North coast of Unimak Island, Aleutian Islands
Photo Date: 1939
Credit: C&GS Season's Report Eickelberg 1939-92
Category: Charting/Navigation/Electronic/Radio-Acoustic Ranging/
• High Resolution Photo Available