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Figure 21

Figure 21. Silvertown Company sounder, a device very similar to the Belknap- Sigsbee sounder with one important difference. This sounder had a unique ballast release method which involved a knife cutting the line holding the ballast upon beginning of ascent. This device was used in cable laying surveys.

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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Added On
18th October 2015
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