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![Mortar-schooners engaged against Fort Jackson theb4141.jpg Mortar-schooners engaged against Fort Jackson](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb4141.jpg?itok=9Q_69jOa)
Description
Mortar-schooners engaged against Fort Jackson. Distance of lead schooner fromthe fort, 2,850 yards as determined by Coast Survey. Total number of shellsfired in six days was 16,800. One of the first instances of the use of geodesyfor indirect artillery fire.
Collection
Historic Coast & Geodetic Survey