On 2 November 1916, U-56 was attacked by gunfire from the Imperial Russian NavydestroyerGrozovoi off Khorne Island, Norway (near Vardø). U-56 survived this attack. U-56 dropped off the crew of the Norwegian merchant shipIvanhoe ashore at 07:45 on 3 November 1916 at Lodsvik. The Norwegian sailors were aboard the ship during the action of the previous day and their description matches with the Russian account.[3]
^Helgason, Guðmundur. "WWI U-boat commanders: Hermann Lorenz". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 5 January 2015.
^Helgason, Guðmundur. "WWI U-boats: U 56". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 16 March 2015.
^Helgason, Guðmundur. "Ships hit by U 56". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 16 March 2015.
Bibliography
Gröner, Erich; Jung, Dieter; Maass, Martin (1991). U-boats and Mine Warfare Vessels. German Warships 1815–1945. Vol. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN0-85177-593-4.