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![Figure 13 ship4213.jpg Figure 13](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_ship4213.jpg?itok=lQJjfID7)
Description
Figure 13. Bouquet de la Grye sounder, invented by the French hydrographicengineer Anatole Bouquet de la Grye in 1869. The main point about this devicewas a new type of weight release mechanism, based on the action of springreleased at the moment that the weight contacted the bottom. This method wasused extensively on cable survey ships. (Image credit: Oceanographic Museum of Monaco | Y. Berard)