Graphic demonstrating Radio Acoustic Ranging (RAR)

Graphic demonstrating Radio Acoustic Ranging (RAR). Developed in 1923, RAR was the first non-visual navigation system. Combined velocity of sound in water with radio to obtain fix.

Photo Category: Charting - Navigation - Electronic - Radio-Acoustic Ranging
Photo Location: Georges Bank
Photo Date: 1931

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Author: NOAA Central Library/ NOAA

License: Public Domain Mark 1.0 (Public domain)

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Added On	18th October 2015
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