SM U-29 (Germany)

SM U 29, Commander Otto Weddigen, leaving harbour for the last cruise
History
German Empire
Name:	U-29
Ordered:	19 February 1912
Builder:	Kaiserliche Werft Danzig
Launched:	11 October 1913
Commissioned:	1 August 1914
Fate:	Rammed and sunk by HMS Dreadnought on 18 March 1915
General characteristics
Class and type:	German Type U 27 submarine
Displacement:	675 t (664 long tons) surfaced 878 t (864 long tons) submerged
Length:	64.70 m (212 ft 3 in) (o/a)
Beam:	6.32 m (20 ft 9 in)
Draught:	3.48 m (11 ft 5 in)
Speed:	16.7 knots (30.9 km/h; 19.2 mph) surfaced 9.8 knots (18.1 km/h; 11.3 mph) submerged
Range:	8,420 nmi (15,590 km; 9,690 mi) at 8 knots (15 km/h; 9.2 mph) surfaced 85 nmi (157 km; 98 mi) at 5 knots (9.3 km/h; 5.8 mph) submerged
Test depth:	50 m (164 ft)
Complement:	4 officers, 31 enlisted
Armament:	4 × 50 cm (19.7 in) torpedo tubes 1 × 8.8 cm (3.46 in) deck gun
Service record
Part of:	Imperial German Navy: IV Flotilla unknown start – 18 March 1915
Commanders:	Kptlt. Wilhelm Plange 1 August 1914 – 15 February 1915 Kptlt. Otto Weddigen 16 February – 18 March 1915
Operations:	1 patrol
Victories:	4 merchant ships sunk (12,934 GRT) 2 ships damaged (4,317 GRT)

SM U-29 was a Type U-27 U-boat of the Imperial German Navy. She served during the First World War.

U-29's last commander was Captain Otto Weddigen. U-29 was sunk with all hands on 18 March 1915 in the Pentland Firth after being rammed by HMS Dreadnought. She is the only submarine known to have been sunk by a battleship.

Coordinates: 58°20′N 0°57′E / 58.333°N 0.950°E / 58.333; 0.950