SM UB-15 was constructed in Germany and shipped by rail to Pola, where she was assembled and launched. She was commissioned into the German Imperial Navy in April and sank an Italian submarine in June. The boat was handed over to Austria-Hungary and commissioned as SM U-11 on 14 June. In early 1916, U-11 fired on a British submarine, but missed. After the end of the war, U-11 was handed over to Italy as a war reparation and scrapped at Pola by 1920.
U-11 was a small coastal submarine that displaced 127 tonnes (125 long tons) surfaced and 141 tonnes (139 long tons) submerged. She featured a single shaft, a single 60 bhp (45 kW) Körting diesel engine for surface running, and a single 120 shp (89 kW) electric motor for submerged travel.[2]U-11 was capable of up to 6.5 knots (12.0 km/h; 7.5 mph) while surfaced and 5.5 knots (10.2 km/h; 6.3 mph) while submerged at a diving depth of up to 50 metres (160 ft). She was designed for a crew of 17 officers and men.[2]
U-11 was equipped with two 45 cm (17.7 in) torpedo tubes located in the front and carried a complement of two torpedoes.[2] German Type UB I submarines were additionally equipped with a 8 mm (0.31 in) machine gun, but it is not clear from sources if U-11 – a former German boat – was fitted with one, or if it was, retained it in Austro-Hungarian service. In October 1916, U-11's armament was supplemented with a 66 mm (2.6 in)/18 (2.6 in) gun.[2]
UB-15 was laid down on 9 November 1914 at AG Weser in Bremen. The submarine was shipped by rail in sections to Pola Navy Yard, where the sections were riveted together. There is no known surviving record of how long it took for UB-15's sections to be assembled. However, a similar ship (UB-3) was built in two weeks.[6]
Operational historyEdit
UB-15Edit
SM UB-15 was commissioned into the German Imperial Navy under the command of Oberleutnant zur SeeHeino von Heimburg on 11 April.[1] An Austro-Hungarian Navy officer was assigned to the boat for piloting and training purposes. On 10 June, UB-15 sank the Italian submarine Medusa for a loss of 245 tons off Porto di Piave Vecchia in the Northern Adriatic.[7][8][Note 2] Like all Type UB I and U-10 class submarines, UB-15 was equipped with compensating tanks designed to flood and offset the loss of one of the 1,700-pound (770 kg) C/06 torpedoes.[9] However, they did not always function correctly; when firing from periscope depth the boat could broach after firing or, if too much weight was taken on, plunge to the depths. When UB-15 torpedoed and sank Medusa, the tank failed to properly compensate, forcing all of the crewmen to run to the stern to offset the trim imbalance and prevent the ship from sinking.[9]
U-11Edit
On 18 June, UB-15 was handed over to the Austro-Hungarian Navy and commissioned as U-11 under the command of Linienschiffsleutnant Lüdwig Eberhardt.[3]U-11 retained its German crew until 18 June 1916, when they were replaced by an all Austro-Hungarian one.[10] In early 1916, U-11 unsuccessfully attacked the British submarine B8 in the Gulf of Fiume.[11]U-11 captured one ship in her Austro-Hungarian service,[4] and was handed over to Italy as a war reparation and scrapped at Pola by 1920.[2]
^Sources differ as to exactly when the U-boat was transferred over to the Austro-Hungarian navy. See Stern, p. 193.
^Sources differ as to whether the U-boat was under German or Austro-Hungarian ownership when she sank the Medusa. See Stern, p. 193.
ReferencesEdit
^ abcdeHelgason, Guðmundur. "WWI U-boats: UB 15". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 4 November 2008.
^ abHelgason, Guðmundur. "WWI U-boats: KUK U11". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 4 November 2008.
^Helgason, Guðmundur. "Ships hit during WWI: Medusa". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 4 November 2008.
Gröner, Erich; Jung, Dieter; Maass, Martin (1991). German Warships 1815–1945, U-boats and Mine Warfare Vessels. Vol. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN0-85177-593-4.
Compton-Hall, Richard (2004) [1991]. Submarines at war, 1914–18. Penzance: Periscope Publishing. ISBN978-1-904381-21-1. OCLC 57639764.
Freivogel, Zvonimir (2007). Austrougarske podmornice u I. svjetskom ratu = Austro-Hungarian submarines in world war I. Rijeka Viškovo: Adamić Digital point tiskara. ISBN9789532193398.
Messimer, Dwight R. (2002). Verschollen : World War I U-boat losses. Annapolis, Maryland: Naval Institute Press. ISBN978-1-55750-475-3. OCLC 231973419.
Stern, Robert Cecil (2007). The Hunter Hunted: Submarine versus Submarine: Encounters from World War I to the Present. Annapolis, Maryland: Naval Institute Press. ISBN978-1-59114-379-6. OCLC 123127537.
October 21, 2023
austria, hungary, class, submarine, austro, hungarian, navy, german, kaiserliche, königliche, kriegsmarine, kriegsmarine, during, world, originally, german, type, submarine, commissioned, into, german, imperial, navy, german, kaiserliche, marine, 11historygerm. SM U 11 or U XI was a U 10 class submarine in the Austro Hungarian Navy German Kaiserliche und Konigliche Kriegsmarine or K u K Kriegsmarine during World War I She was originally a German Type UB I submarine commissioned into the German Imperial Navy German Kaiserliche Marine as SM UB 15 SM U 11HistoryGerman EmpireNameUB 15Ordered15 October 1914BuilderAG Weser Bremen 2 Yard number224Laid down9 November 1914 1 Commissioned11 April 1915 1 FateTransferred to Austria Hungary 14 June 1915 2 Note 1 Service record as UB 15Commanders Oblt Heino von Heimburg 4 17 June 1915 1 Victories 1 warship sunk 245 tons 1 Austria HungaryNameSM U 11Acquired14 June 1915 2 Commissioned18 June 1915 3 FateWar reparation to Italy scrapped at Pola 1920 2 Service record as U 11 4 Commanders Ludwig Eberhardt 8 June 31 August 1915 Karl Edler von Unczowski 16 September 28 October 1915 Robert Teufl von Fernland 28 October 1915 30 August 1916 Johann Krsnjavi 30 August 1916 25 May 1917 Ludwig Muller 25 May 16 July 1917 Wladimir Pfeifer 16 July 17 September 1917 Eugen Hornyak Edler von Horn 17 September 1917 12 January 1918 Hugo Pistel 12 January 19 June 1918 Alfons Graf Montecuccoli 19 June 27 August 1918 Alois Sernetz 27 August 31 October 1918Victories 1 auxiliary warship taken as prize 10 484 GRT General characteristics 5 Class and typeAs built German Type UB I submarine After June 1915 U 10 class submarineDisplacement127 tonnes 125 long tons surfaced 141 tonnes 139 long tons submergedLength27 88 m 91 ft 6 in o a 23 62 m 77 ft 6 in pressure hullBeam3 15 m 10 ft 4 in Draught3 03 m 9 ft 11 in Propulsion1 shaft 1 Korting diesel engine 60 bhp 45 kW 1 electric motor 120 shp 89 kW Speed6 5 knots 12 0 km h 7 5 mph surfaced 5 5 knots 10 2 km h 6 3 mph submergedRange1 500 nmi 2 800 km 1 700 mi at 5 knots 9 3 km h 5 8 mph surfaced 45 nmi 83 km 52 mi at 4 knots 7 4 km h 4 6 mph submergedComplement17Armament2 45 cm 17 7 in torpedo tubes both in front 2 torpedoes 2 1 66 mm 2 6 in 18 October 1916 SM UB 15 was constructed in Germany and shipped by rail to Pola where she was assembled and launched She was commissioned into the German Imperial Navy in April and sank an Italian submarine in June The boat was handed over to Austria Hungary and commissioned as SM U 11 on 14 June In early 1916 U 11 fired on a British submarine but missed After the end of the war U 11 was handed over to Italy as a war reparation and scrapped at Pola by 1920 Contents 1 Design and construction 2 Operational history 2 1 UB 15 2 2 U 11 3 Summary of raiding history 4 Notes 5 References 6 BibliographyDesign and construction EditU 11 was a small coastal submarine that displaced 127 tonnes 125 long tons surfaced and 141 tonnes 139 long tons submerged She featured a single shaft a single 60 bhp 45 kW Korting diesel engine for surface running and a single 120 shp 89 kW electric motor for submerged travel 2 U 11 was capable of up to 6 5 knots 12 0 km h 7 5 mph while surfaced and 5 5 knots 10 2 km h 6 3 mph while submerged at a diving depth of up to 50 metres 160 ft She was designed for a crew of 17 officers and men 2 U 11 was equipped with two 45 cm 17 7 in torpedo tubes located in the front and carried a complement of two torpedoes 2 German Type UB I submarines were additionally equipped with a 8 mm 0 31 in machine gun but it is not clear from sources if U 11 a former German boat was fitted with one or if it was retained it in Austro Hungarian service In October 1916 U 11 s armament was supplemented with a 66 mm 2 6 in 18 2 6 in gun 2 UB 15 was laid down on 9 November 1914 at AG Weser in Bremen The submarine was shipped by rail in sections to Pola Navy Yard where the sections were riveted together There is no known surviving record of how long it took for UB 15 s sections to be assembled However a similar ship UB 3 was built in two weeks 6 Operational history EditUB 15 Edit SM UB 15 was commissioned into the German Imperial Navy under the command of Oberleutnant zur See Heino von Heimburg on 11 April 1 An Austro Hungarian Navy officer was assigned to the boat for piloting and training purposes On 10 June UB 15 sank the Italian submarine Medusa for a loss of 245 tons off Porto di Piave Vecchia in the Northern Adriatic 7 8 Note 2 Like all Type UB I and U 10 class submarines UB 15 was equipped with compensating tanks designed to flood and offset the loss of one of the 1 700 pound 770 kg C 06 torpedoes 9 However they did not always function correctly when firing from periscope depth the boat could broach after firing or if too much weight was taken on plunge to the depths When UB 15 torpedoed and sank Medusa the tank failed to properly compensate forcing all of the crewmen to run to the stern to offset the trim imbalance and prevent the ship from sinking 9 U 11 Edit On 18 June UB 15 was handed over to the Austro Hungarian Navy and commissioned as U 11 under the command of Linienschiffsleutnant Ludwig Eberhardt 3 U 11 retained its German crew until 18 June 1916 when they were replaced by an all Austro Hungarian one 10 In early 1916 U 11 unsuccessfully attacked the British submarine B8 in the Gulf of Fiume 11 U 11 captured one ship in her Austro Hungarian service 4 and was handed over to Italy as a war reparation and scrapped at Pola by 1920 2 Summary of raiding history EditDate Name Nationality Tonnage Fate 12 10 June 1915 Medusa nbsp Regia Marina 245 Sunk20 January 1916 Konig Albert nbsp Kingdom of Italy 10 484 Captured as prizeNotes Edit Sources differ as to exactly when the U boat was transferred over to the Austro Hungarian navy See Stern p 193 Sources differ as to whether the U boat was under German or Austro Hungarian ownership when she sank the Medusa See Stern p 193 References Edit a b c d e Helgason Gudmundur WWI U boats UB 15 German and Austrian U boats of World War I Kaiserliche Marine Uboat net Retrieved 4 November 2008 a b c d e f g h i j Gardiner p 343 a b Freivogel 2007 p 10 a b Helgason Gudmundur WWI U boats KUK U11 German and Austrian U boats of World War I Kaiserliche Marine Uboat net Retrieved 4 November 2008 Groner 1991 p 49 Messimer p 126 27 Helgason Gudmundur Ships hit during WWI Medusa German and Austrian U boats of World War I Kaiserliche Marine Uboat net Retrieved 4 November 2008 Compton Hall p 235 a b Stern p 25 Erwin Sieche The Austro Hungarian Submarine Force Austro Hungarian Warships In Photographs Vol 2 1896 1918 Retrieved 8 February 2010 Compton Hall p 240 Helgason Gudmundur Ships hit by UB 15 German and Austrian U boats of World War I Kaiserliche Marine Uboat net Retrieved 26 January 2015 Bibliography EditBendert Harald 2000 Die UB Boote der Kaiserlichen Marine 1914 1918 Einsatze Erfolge Schicksal in German Hamburg Verlag E S Mittler amp Sohn GmbH ISBN 3 8132 0713 7 Groner Erich Jung Dieter Maass Martin 1991 German Warships 1815 1945 U boats and Mine Warfare Vessels Vol 2 Translated by Thomas Keith Magowan Rachel London Conway Maritime Press ISBN 0 85177 593 4 Compton Hall Richard 2004 1991 Submarines at war 1914 18 Penzance Periscope Publishing ISBN 978 1 904381 21 1 OCLC 57639764 Freivogel Zvonimir 2007 Austrougarske podmornice u I svjetskom ratu Austro Hungarian submarines in world war I Rijeka Viskovo Adamic Digital point tiskara ISBN 9789532193398 Gardiner Robert Gray Randal eds 1985 Conway s All the World s Fighting Ships 1906 1921 Annapolis Maryland Naval Institute Press ISBN 978 0 87021 907 8 OCLC 12119866 Messimer Dwight R 2002 Verschollen World War I U boat losses Annapolis Maryland Naval Institute Press ISBN 978 1 55750 475 3 OCLC 231973419 Stern Robert Cecil 2007 The Hunter Hunted Submarine versus Submarine Encounters from World War I to the Present Annapolis Maryland Naval Institute Press ISBN 978 1 59114 379 6 OCLC 123127537 Retrieved from https en wikipedia org w index php title SM U 11 Austria Hungary amp oldid 1172001306, wikipedia, wiki, book, books, library,
