SM U-111 at sea, 1919
|Career (German Empire)|
|Ordered:||5 May 1916|
|Yard number:||Werk 280|
|Launched:||5 September 1917|
|Commissioned:||30 December 1917|
|Fate:||Surrendered to the USA 20 November 1918|
|Class and type:||German Type U 93 submarine|
|Displacement:||808 tons surfaced
946 tons submerged
1160 tons (total)
|Length:||70.60 m (overall)
55.55 m (pressure hull)
|Beam:||6.30 m (overall)
4.15 m (pressure hull)
|Propulsion:||2400 hp surfaced
1200 hp submerged
|Speed:||16.8 knots surfaced
9.1 knots submerged
|Range:||11,220 nautical miles (20,780 km) surfaced
56 nautical miles (104 km) submerged
|Armament:||16 torpedoes (4/2 in bow/stern tubes)
105mm deck gun with 220 rounds
88mm deck gun
|Part of:||Imperial German Navy:
Unknown start - 11 Nov 1918
|Commanders:||Kptlt Hans Beyersdorff
30 Dec 1917 - 11 Nov 1918
|Victories:||3 merchant ship sunk (3,011 gross register tons (GRT))|
SM U-111 was one of the 329 submarines serving in the Imperial German Navy in World War I. She took part in the First Battle of the Atlantic. She was the only submarine which had a clergyman on board (Wilhelm Meinhold, Marinepfarrer).
Completed at Kiel early in January 1918, she went to the Kiel School for shakedown and training until March, when she joined 4. Flotille. She was monitored continuously by British Naval Intelligence (Room 30), on which her movement reports are based. All her operations took place in 1918.
She departed 26 March on her first war patrol, operating in the Irish Sea and western entrance to the English Channel, sinking two steamers and returning to Kiel and 23 April. Her second patrol began 27 May, sailing fro Heligoland Bight via Muckle Flugga to the western English Channel. She sank at least one confirmed steamer, and returned the same way, arriving 24 June. Her third patrol, between 25 August and 29 September, was via Fastnet and Scillies into the Irish Sea, where she was hampered by British A/S patrols and obtained no sinkings.
Summary of Raiding Career
|7 April 1918||Boscastle||United Kingdom||2,346||Sunk|
|28 May 1918||Dronning Margrethe||Denmark||393||Sunk|
|22 June 1918||Rana||Norway||272||Sunk|
- Spindler, Arno (1932,1933,1934,1941/1964,1966). Der Handelskrieg mit U-Booten. 5 Vols. Berlin: Mittler & Sohn. Vols. 4+5, dealing with 1917+18, are very hard to find: Guildhall Library, London, has them all, also Vol. 1-3 in an English translation: The submarine war against commerce. Check date values in:
- Beesly, Patrick (1982). Room 40: British Naval Intelligence 1914-1918. London: H Hamilton. ISBN 978-0-241-10864-2.
- Halpern, Paul G. (1995). A Naval History of World War I. New York: Routledge. ISBN 978-1-85728-498-0.
- Roessler, Eberhard (1997). Die Unterseeboote der Kaiserlichen Marine. Bonn: Bernard & Graefe. ISBN 978-3-7637-5963-7.
- Schroeder, Joachim (2002). Die U-Boote des Kaisers. Bonn: Bernard & Graefe. ISBN 978-3-7637-6235-4.
- Koerver, Hans Joachim (2008). Room 40: German Naval Warfare 1914-1918. Vol I., The Fleet in Action. Steinbach: LIS Reinisch. ISBN 978-3-902433-76-3.
- Koerver, Hans Joachim (2009). Room 40: German Naval Warfare 1914-1918. Vol II., The Fleet in Being. Steinbach: LIS Reinisch. ISBN 978-3-902433-77-0.
- Photos of cruises of German submarine U-54 in 1916-1918.
- A 44 min. German film from 1917 about a cruise of the German submarine U-35.
- Uboat.net: More detailed information about U-111.
- Room 40: original documents, photos and maps about World War I German submarine warfare and British Room 40 Intelligence from The National Archives, Kew, Richmond, UK.