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NOAA Photo Library Image - theb3774

Sounding device made by William P. Trowbridge for Coast Survey. Line would pay out of a descending cylinder and stationery cylinder on deck. Similar to modern bathythermograph copper wire instrument. Civil War intervened stopping research. Probably would have worked

Image ID: theb3774, Voyage To Inner Space - Exploring the Seas With NOAA Collect
Photo Date: 1860
Credit: NOAA Central Library

Category: Charting/Soundings/Bathymetry/Mechanical/

High Resolution Photo Available

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Last Updated:
November 10, 2017