U-56 arriving in a spanish port
|Ordered:||23 August 1914|
|Laid down:||28 December 1914|
|Launched:||18 April 1916|
|Commissioned:||23 June 1916|
|Fate:||3 November 1916 - Missing after 3 November 1916. 35 dead (all hands lost)|
|Class and type:||Type U 51 submarine|
|Height:||7.82 m (25 ft 8 in)|
|Draught:||3.64 m (11 ft 11 in)|
|Test depth:||50 m (164 ft 1 in)|
|Victories:||5 merchant ships sunk (5,701 GRT)|
On 2 November 1916, U-56 was attacked by gunfire from the Imperial Russian Navy destroyer Grozovoi off Khorne Island, Norway (near Vardø). U-56 was survived this attack. U-56 put the crew of the Norwegian merchant ship Ivanhoe ashore at 07:45 on 3 November 1916 at Lodsvik. The Norwegian sailors were aboard during the action the previous day and their description matches the Russian account.
Summary of raiding history
|22 October 1916||Theodosi Tschernigowski||327||Sunk|
|23 October 1916||Rensfjell||781||Sunk|
|25 October 1916||Dag||963||Sunk|
|26 October 1916||Oola||2,494||Sunk|
|1 November 1916||Ivanhoe||1,136||Sunk|
- "SM" stands for "Seiner Majestät" (English: His Majesty's) and combined with the U for Unterseeboot would be translated as His Majesty's Submarine.
- Tonnages are in gross register tons
- Gröner 1991, pp. 8-10.
- 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.
- Gröner, Erich; Jung, Dieter; Maass, Martin (1991). U-boats and Mine Warfare Vessels. German Warships 1815–1945. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN 0-85177-593-4.