Naval operations Dover 1914-1918 A.D. Patrol from British & German Admiralty records complied by Albert Close naval and military cartographer 16 York Road Ilford London 1927 reproduced at Stanfords Geogr Estabt London

Scale: 1:250,000 (bar). Printed chart of the North Sea with sites of sinkings, barrages, mines, gun batteries, net drifters etc. With lists of calendar notes, records and photos of 23 U boat commanders Insets: 1. Battle of Jutland; 2. 1918 battles in the Low Countries