SM U-9

	U-9 ready for patrol.
History
German Empire
Name	U-9
Ordered	15 July 1908
Builder	Kaiserliche Werft, Danzig
Cost	2,140,000 Goldmark
Yard number	4
Launched	22 February 1910
Commissioned	18 April 1910
Fate	Surrendered 26 November 1918. Broken up at Morecambe in 1919.
General characteristics
Class and type	German Type U 9 submarine
Displacement	493 tonnes (485 long tons) surfaced; 611 tonnes (601 long tons) submerged;
Length	57.38 m (188 ft 3 in) (o/a); 48 m (157 ft 6 in) (pressure hull);
Beam	6 m (19 ft 8 in) (o/a); 3.65 m (12 ft) (pressure hull);
Height	7.05 m (23 ft 2 in)
Draught	3.13 m (10 ft 3 in)
Installed power	2 × Körting 6-cylinder and 2 × Körting 8-cylinder two stroke paraffin motors with a total of 1,000 PS (740 kW; 990 shp); 2 × SSW electric motors with 1,160 PS (850 kW; 1,140 shp); 550 rpm surfaced; 460 rpm submerged;
Propulsion	2 shafts; 2 × 1.45 m (4 ft 9 in) propellers;
Speed	14.2 knots (26.3 km/h; 16.3 mph) surfaced; 8.1 knots (15.0 km/h; 9.3 mph) submerged;
Range	1,800 nmi (3,300 km; 2,100 mi) at 14 knots (26 km/h; 16 mph); 80 nmi (150 km; 92 mi) at 5 knots (9.3 km/h; 5.8 mph);
Test depth	50 m (160 ft)
Boats & landing ; craft carried	1 dinghy
Complement	4 officers, 25 enlisted
Armament	four 45 cm (17.7 in) torpedo tubes (2 each bow and stern); 6 torpedoes; 1 × 3.7 cm (1.5 in) Hotchkiss gun; 1 × 5 cm (2 in) SK L/40 gun (from 1915); 1 × machine gun; 12 P-Mines (March–December 1916);
Service record
Part of:	I Flotilla; 1 August 1914 – 7 July 1915; Baltic Flotilla; 7 July 1914 – 29 April 1916; Training Flotilla; 20 April 1916 – 11 November 1918;
Commanders:	Kptlt. Otto Weddigen; 1 October 1911 – 11 January 1915; Kptlt. Johannes Spieß; 12 January 1915 – 19 April 1916;
Operations:	7 patrols
Victories:	13 merchant ships sunk; (8,635 GRT); 4 warships sunk; (43,350 tons); 1 auxiliary warship sunk; (1,080 GRT);
Awards:	Iron Cross

SM U-9 was a German Type U 9 U-boat. She was one of 329 submarines serving in the Imperial German Navy, and engaged in commerce raiding (Handelskrieg) during World War I.

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