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![Building a 100-foot tall hydrographic signal theb2189.jpg Building a 100-foot tall hydrographic signal](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb2189.jpg?itok=9mKR-Lwf)
Description
Building a 100-foot tall hydrographic signal (Image credit: Captain Hubert A. Paton, C&GS;)
Credit
Captain Hubert A. Paton, C&GS;
Collection
Historic Coast & Geodetic Survey
Nautical Charting
Navigation
Hydrographic Signals
Keywords
Charting
Navigation
Visual Signals
Wooden