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![Figure 63 ship4191.jpg Figure 63](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_ship4191.jpg?itok=Y-9wCx_A)
Description
Figure 63. Van Dorn bottle created by Dr. William G. Van Dorn in 1956. It isquestionable whether this should be considered a modern instrument given itsmaterials of construction. However, on second thought, it is very similar tomodern valve-closing bottles. Left: descending. Right: ascending. (Image credit: Oceanographic Museum of Monaco | Y. Berard)