Portuguese settlements and rivers and bays are indicated on the coastlines. The sea contains a compass rose and one sailing vessel. Sea chart Uncolored Norwich, I., Pam Kolbe, and Jeffrey C Stone. Norwich's Maps of Africa: An Illustrated and Annotated Carto-Bibliography. 2nd ed. / rev. and edited by Jeffrey C. Stone. Norwich, Vt.: Terra Nova Press, 1997, map 0248, p. 285 Dr. Oscar I. Norwich David Rumsey Map Center copy 1: Norwich no. NOR 0248.