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![Figure 4 ship4203.jpg Figure 4](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_ship4203.jpg?itok=-O93Q7Fo)
Description
Figure 4. A lead fish used for continuous sounding operations at slow speed.This device was invented in 1914 and improved by Pierre Marti in 1920. (Image credit: Oceanographic Museum of Monaco | Y. Berard)
Credit
Oceanographic Museum of Monaco
Photographer
Y. Berard
Collection
Voyage to Inner Space
History of Oceanography Collection
The Early Instruments - Collections of the Oceanographic Museum at Monaco
Sounding Instruments
Keywords
Oceanography
Historical instruments