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NOAA Photo Library Image - ship4107

Figure 41. Apstein instrument and graph for determining the depth of horizontal ly towed nets. First noted by Carl Apstein in 1909, this instrument was used for many years to determine the depth of net at various towing speeds and amount of tension on the towing line.

Image ID: ship4107, Voyage To Inner Space - Exploring the Seas With NOAA Collect
Photographer: D. Mille
Credit: Oceanographic Museum of Monaco

Category: Oceanography/Historical instruments/

High Resolution Photo Available





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Last Updated:
April 30, 2013