Scale: circa 1:700,000. Coast of Poland from Kurische Gulf to Tallin including the Gulf of Riga. Seven insets. Twelve lighthouse elevations. Insets: 1. Hapsal Harbour circa 1:45,000; 2. Dago I Tiefen Hafen (Deep Harbour) circa 1:35,000; 3. Gulf of Riga river Dvina from the roadstead to the town of Riga circa 1:49,500; 4. Wormso Channel and Hapsal Harbour circa 1:150,000; 5. Memel circa 1:60,000; 6. Pillau circa 1:60,000; 7. Libau from a Russian Survey of 1868 circa 1:15,000.