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![Building a large hydrographic signal theb2191.jpg Building a large hydrographic signal](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb2191.jpg?itok=UpaSiq5I)
Description
Building a large hydrographic signal.Multiple colors for identification from offshore.Party off of OCEANOGRAPHER (Image credit: Family of Captain Robert A. Earle, C&GS;)
Credit
Family of Captain Robert A. Earle, C&GS;
Display Date
1935?
Location
Mid-Atlantic coast of the United States
Collection
Historic Coast & Geodetic Survey
Nautical Charting
Navigation
Hydrographic Signals
Keywords
Charting
Navigation
Visual Signals
Wooden