pl23_cgs00927.jpg
Image
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https://www.noaa.gov/media/digital-library-photo/pl23cgs00927jpgDescription
A cartoon of a survey ship approaching a radio acoustic ranging (RAR) radiosono-buoy. The radio sono-buoy technology was adopted by the Navy forWorld War II anti-submarine warfare and has continued evolving in increasinglysophisticated incarnations.
Credit
NOAA Historical Image
Category
Historic Coast & Geodetic Survey