pl23_theb3801.jpg
Description
Installation of deepsea sounding equipment.C&GS; 1931 Hydrographic Manual
Credit
NOAA Central Library
Display Date
1931
Collection
Historic Coast & Geodetic Survey
Nautical Charting
Bathymetry - Mapping the Features
Pre-1920
Keywords
Charting
Soundings
Bathymetry
Mechanical