SM U-65 (Germany)

U-65. Kaptlt. Hermann von Fischel. On completion at Kiel did trials at Kiel School about May and June 1916, afterwards proceeding to the North Sea to join 4th Flotilla.

• ? 11–14 July 1916. North Sea patrol.
• 16–24 July 1916. North Sea patrol.
• 17–21 August 1916. North Sea patrol, attacked minesweeper Haldon 20 August.
• 3–4 September 1916. North Sea patrol. Returned with defects.
• 26 October – 19 November 1916. To Mediterranean, northabout. Engaged by armed yacht Valiant II in 35°55′N 3°57′W. Sank nothing. On arrival at Cattaro joined the Pola-Cattaro Flotilla.
• 28 November – 7 December 1916. Left Cattaro and on 1 December probably sank a steamer. On 4 December sank British SS Caledonia in 35°40′N 17°04′E. The submarine was badly rammed by Caledonia and appears to have returned home immediately on the surface.
• 17 February 1917. Sank troopship SS Athos (12,644 tons). 754 casualties.
• 29 March – 19/20 April 1917. In western Mediterranean sank 4 steamships, 5 sailing vessels (13,000 tons).
• 14 May – 9 June 1917. Possible cruise of U-65. After leaving Cattaro submarine damaged cruiser HMS Dartmouth by torpedo on 15 May in 41°11′N 18°15′E. She then sank 7 steamers and 12 sailing vessels in the central Mediterranean. 6 June, she was reported off Cape Passaro, 7 June in the vicinity of Straits of Messina, and 8 June was possibly attacked by seaplane in 39°4′N 19°00′E.
• The next cruise of U-65 which can be reconstructed with probability was from 10 to 31 January or 1 February 1918. On this cruise she sank 2 steamers and 1 sailing vessel, and was twice attacked from the air and once by depth-charged by Campanula, which she missed by torpedo.
• A later possible cruise was for about the first 3 weeks of September 1918, on which she sank 4 steamers and damaged 4 more, between longitudes 8° and 17°E.
• At the end of October 1918 she was scuttled[9] by the Germans at Pola or Cattaro.

• Room 40
• Anti-submarine warfare
• U-boat Campaign (World War I)

• 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. ISBN 0-85177-593-4.
• Spindler, Arno (1966) [1932]. 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.
• 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.
• Helgason, Guðmundur. "WWI U-boats: U 65". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net.
• Room 40: Archived 15 October 2018 at the Wayback Machine original documents, photos and maps about World War I German submarine warfare and British Room 40 Intelligence from The National Archives, Kew, Richmond, UK.