Shows buoys with red and black ink.
Relief shown by hachures. Depths shown by soundings and shading.
"Issued in May 1889, F.M. Thorn, superintendent."
In upper right margin: Electrotype copy no. 14, U.S.C. & G.S.
Includes tables of tides, lighthouses, and bottom types, and 3 coastal views.
In upper left margin: No. 337.
In upper center margin: Plate no. 1970.