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![Raydist strip chart record used to keep track of individual navigation rates theb2327.jpg Raydist strip chart record used to keep track of individual navigation rates](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb2327.jpg?itok=p07JEPWM)
Description
Raydist strip chart record used to keep track of individual navigation rates.These strip charts required continuous monitoring by a watch-stander.Used to assure navigational accuracy during hydrographic surveying operations.First tests of Raydist on SOSBEE in 1954.Used for over 40 years with various systems (Image credit: C&GS; Season's Report Bolstad 1954)