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Figure 10

Figure 10. Bulldog sounder, invented by Marine Engineer Roughton, assistant engineer Steil, and naturalist George C. Wallich for use in deep water sounding operations by HMS BULLDOG in the North Sea and North Atlantic Ocean in 1860 while under command of Sir Leopold McClintock RN. This device was also used on HMS PORCUPINE in water depths up to 3200 meters in 1862.

Photo Category: Oceanography - Historical instruments

Author: Y. Berard/Oceanographic Museum of Monaco/ NOAA

License: Public Domain Mark 1.0 (Public domain)
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18th October 2015
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