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![A schematic view of RAR and echo-sounding theb2258.jpg A schematic view of RAR and echo-sounding](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb2258.jpg?itok=xxahxwSz)
Description
A schematic view of RAR and echo-sounding.Diagram in public information brochure (Image credit: NOAA Central Library)
Credit
NOAA Central Library
Display Date
1934
Collection
Historic Coast & Geodetic Survey
Nautical Charting
Navigation
Radio Acoustic Ranging
Keywords
Charting
Navigation
Electronic
Radio-Acoustic Ranging