pl23_theb3165.jpg
![Shallow water soundings being located by stadia theb3165.jpg Shallow water soundings being located by stadia](https://s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb3165.jpg)
Description
Shallow water soundings being located by stadia.A non-electronic means of range-azimuth navigation.Boat operating with Lake Survey
Credit
NOAA
Display Date
1963
Location
Great Lakes
Collection
Historic Coast & Geodetic Survey
Keywords
Charting
Boats
Sounding