pl23_theb3797.jpg
Description
Sounding machine - detail view.On the PATTERSON
Credit
C&GS; Season's Report Miller 1913-59
Display Date
October, 1913
Location
Unimak Island area, Aleutian Islands, Alaska Photo
Collection
Historic Coast & Geodetic Survey
Nautical Charting
Bathymetry - Mapping the Features
Pre-1920
Keywords
Charting
Soundings
Bathymetry
Mechanical