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