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![Figure 55 ship4263.jpg Figure 55](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_ship4263.jpg?itok=8UvyC5fI)
Description
Figure 55. Burt's nipper, invented by Peter Burt, a British ship builder, in1818. It was used to keep the sounding line vertical in spite of the motion ofthe ship. It was used by the British Admiralty along with a device of the sametype designed by Massey. (Image credit: Oceanographic Museum of Monaco | Y. Berard)