pl23_theb2193.jpg
![Large hydrographic signal theb2193.jpg Large hydrographic signal](https://s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb2193.jpg)
Description
Large hydrographic signal.Photograph in 1931 Hydrographic Manual
Credit
NOAA Central Library
Collection
Historic Coast & Geodetic Survey
Nautical Charting
Navigation
Hydrographic Signals
Keywords
Charting
Navigation
Visual Signals
Wooden