Relief shown by hachures. Depths shown by soundings. In upper margin: No. 3. In lower margin: 557. Insets: Marian Cove -- Borja Bay. Historic Maps copy has label on verso: South America. Ports in Strait of Magalhanes--No. 3--Deep Harbor, Playa Parda Cove, Harbor of Mercy, Valentine Harbor, Port Tamar. 557. Historic Maps copy has ms. annotations.