Preliminary chart of Port Royal entrance. Beaufort, Chechessee, and Colleton Rivers, South Carolina From a trigonometrical survey under the direction of A. D. Bache, Superindent of the survey of the coast of the United States. Triangulation by C. O. Boutelle, Assist. Hydrography by the parties under the command of Lieuts. Commdg. J. N. Maffit and C. M. Fauntleroy, U.S.N, Assists. United States Coast Survey.