Hand sketch "Exhibiting the normal course and velocity of the tidal current at ebb for the 2nd Quarter (of the moon) in Charleston Harbor" by Lieut. J. N. Maffitt. Original mockup version.
Image ID: cgs05113, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection Location: South Carolina, Charleston Photo Date: 1852 Credit: NARA C&GS Colllection Category: Coast and Geodetic Survey/Archive Oceanography Tides/ • High Resolution Photo Available
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