SM U-15 (Austria-Hungary)

History
Austria-Hungary
Name:	SM U-15
Builder:	AG Weser, Bremen
Yard number:	232
Launched:	September 1915
Commissioned:	6 October 1915
Fate:	Handed over to Italy as war reparations and scrapped, 1920
Service record
Commanders:	Friedrich Schlosser (October – November 1915) Friedrich Fähndrich (November 1915 – March 1916) Franz Rzemenowsky von Trautenegg (March 1916) Friedrich Fähndrich (May – December 1916) Franz Rzemenowsky von Trautenegg (October 1916) Otto Molitor (from December 1916 –) Franz Rzemenowsky von Trautenegg (to June 1917) Otto Molitor (June – July 1917) Ludwig Müller (July 1917 – March 1918) Andreas Korparic (March – October 1918)
Victories:	5 ships (8,044 GRT) sunk 1 warship (745 GRT) sunk
General characteristics
Type:	U-10-class submarine
Displacement:	125.5 long tons (127.51 t) surfaced 140.25 long tons (142.50 t) submerged
Length:	28.10 m (92 ft 2 in) (o/a) 23.62 m (77 ft 6 in) pressure hull
Beam:	3.15 m (10 ft 4 in)
Draught:	3.03 m (9 ft 11 in)
Propulsion:	1 × shaft 1 × Daimler diesel engine, 59 bhp (44 kW) 1 × electric motor, 119 shp (89 kW)
Speed:	6.5 knots (12.0 km/h; 7.5 mph) surfaced 5.5 knots (10.2 km/h; 6.3 mph) submerged
Range:	1,500 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) submerged
Complement:	17
Armament:	2 × 45 cm (17.7 in) torpedo tubes (both in front) 2 torpedoes 1 × 37 mm/23 (1.5 in) QF gun, October 1916 1 × 47 mm/23 (1.9 in) QF gun, November 1917

SM U-15 or U-XV was a U-10-class submarine or U-boat of the Austro-Hungarian Navy (German: Kaiserliche und Königliche Kriegsmarine or K.u.K. Kriegsmarine) during World War I. U-15 was constructed in Germany and shipped by rail to Pola where she was assembled and launched in April 1915. She was commissioned in October 1915. U-15 was the most successful boat of the U-10 class, sinking six ships totaling more than 8,000 gross register tons (GRT). The boat survived the war and was handed over to Italy as a war reparation and scrapped in 1920.

U-15 was constructed at AG Weser in Bremen for the Austro-Hungarian Navy and then shipped by rail in sections to Pola, where the sections were riveted together. Though there is no specific mention of how long it took for U-15's sections to be assembled, a sister boat, the German Type UB I submarine UB-3, shipped to Pola from Germany in mid-April 1915, was assembled in about two weeks.U-15 was launched in April.

U-15 was a small, coastal submarine that displaced 125.5 long tons (127.5 t) surfaced and 140.25 long tons (142.50 t) submerged. She featured a single shaft, a single 59 bhp (44 kW) Daimler diesel engine for surface running, and a single 119 shp (89 kW) electric motor for submerged travel.U-15 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.

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