Relief shown by hachures. Depths shown by soundings and isolines. Includes sailing directions and information on tides. "Harbor map no."--Upper left margin. "Electrotype copy no. 2 by G. Mathiot, U.S.C.S."--Upper right margin. "Final reduction for engraving by M.I. McClery, asst. Engraving principally by S.T. Pettit. Printed by H. Benner."--Lower margin.