Graphic demonstrating Radio Acoustic Ranging (RAR). Developed in 1923, RAR was the first non-visual navigation system. It combined velocity of sound in water with radio to obtain fix. (NOAA Photo Library)
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Graphic demonstrating Radio Acoustic Ranging (RAR). Developed in 1923, RAR was the first non-visual navigation system. It combined velocity of sound in water with radio to obtain fix. (NOAA Photo Library)
Related Links
|
|
|