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NOAA Photo Library Image - cgs00927

A cartoon of a survey ship approaching a radio acoustic ranging (RAR) radio sono-buoy. The radio sono-buoy technology was adopted by the Navy for World War II anti-submarine warfare and has continued evolving in increasingly sophisticated incarnations.

Image ID: cgs00927, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection
Credit: NOAA Historical Image

High Resolution Photo Available

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Last Updated:
November 10, 2017