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NOAA Photo Library Image - ship4271

Figure 63. Marti's continuous recording sounder built by the French engineer Pierre Marti. In 1919, Marti began designing and describing sounding machines based on acoustic methods. This recording device allowed measuring time of sound emanation and time of reception, thus giving travel time which can be used to determine depth.

Image ID: ship4271, Voyage To Inner Space - Exploring the Seas With NOAA Collect
Photographer: Y. Berard
Credit: Oceanographic Museum of Monaco

Category: Oceanography/Historical instruments/

High Resolution Photo Available





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Last Updated:
April 30, 2013