pl23_theb3771.jpg
Description
USS VINCENNES in pack ice - Captain Charles Wilkes commanding.On the Antarctic shelf, Wilkes sounded with copper wire in 400 fathoms.First use of wire instead of hemp sounding line.Copper too ductile and would break - gave up on idea
Credit
NOAA Central Library
Display Date
1840
Location
Antarctica, Wilkes Land Photo
Collection
Historic Coast & Geodetic Survey
Nautical Charting
Bathymetry - Mapping the Features
Pre-1920
Keywords
Charting
Soundings
Bathymetry
Mechanical