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NOAA Photo Library Image - ship3097

A diagram of the old wiredrag system as developed by Nicholas Heck, Jean Hawley, and others in the U. S. Coast and Geodetic Survey. Prior to the development of sidescan sonar, this was the only method to find protrusions from the bottom that occurred between sounding lines.

Image ID: ship3097, Voyage To Inner Space - Exploring the Seas With NOAA Collect


Category: Historical Ships/Sounding/

High Resolution Photo Available





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Last Updated:
April 30, 2013