SM UB-129

	UB-148 at sea, a U-boat similar to UB-129.
History
German Empire
Name	UB-129
Ordered	6 / 8 February 1917
Builder	AG Weser, Bremen
Cost	3,654,000 German Papiermark
Yard number	302
Laid down	21 August 1917
Launched	10 April 1918
Commissioned	11 May 1918
Fate	Lost in the surrender of Austria-Hungary, 31 October 1918
General characteristics
Class & type	Type UB III submarine
Displacement	512 t (504 long tons) surfaced; 643 t (633 long tons) submerged;
Length	55.85 m (183 ft 3 in) (o/a)
Beam	5.80 m (19 ft)
Draught	3.72 m (12 ft 2 in)
Propulsion	2 × propeller shaft; 2 × Benz four-stroke 6-cylinder diesel engines, 1,050 bhp (780 kW); 2 × Schiffsunion electric motors, 780 shp (580 kW);
Speed	13.9 knots (25.7 km/h; 16.0 mph) surfaced; 7.6 knots (14.1 km/h; 8.7 mph) submerged;
Range	7,280 nmi (13,480 km; 8,380 mi) at 6 knots (11 km/h; 6.9 mph) surfaced; 55 nmi (102 km; 63 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged;
Test depth	50 m (160 ft)
Complement	3 officers, 31 men
Armament	5 × 50 cm (19.7 in) torpedo tubes (4 bow, 1 stern); 10 torpedoes; 1 × 10.5 cm (4.13 in) deck gun;
Service record
Part of:	Mittelmeer I Flotilla; 2 – 30 October 1918;
Commanders:	Kptlt. Karl Neumann; 11 June – 30 October 1918;
Operations:	1 patrol
Victories:	2 merchant ships sunk ; (5,098 GRT)

SM UB-129 was a German Type UB III submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was commissioned into the German Imperial Navy on 11 June 1918 as SM UB-129.

History
UB-148 at sea, a U-boat similar to UB-129.
German Empire
Name	UB-129
Ordered	6 / 8 February 1917
Builder	AG Weser, Bremen
Cost	3,654,000 German Papiermark
Yard number	302
Laid down	21 August 1917
Launched	10 April 1918
Commissioned	11 May 1918
Fate	Lost in the surrender of Austria-Hungary, 31 October 1918
General characteristics
Class & type	Type UB III submarine
Displacement	512 t (504 long tons) surfaced 643 t (633 long tons) submerged
Length	55.85 m (183 ft 3 in) (o/a)
Beam	5.80 m (19 ft)
Draught	3.72 m (12 ft 2 in)
Propulsion	2 × propeller shaft 2 × Benz four-stroke 6-cylinder diesel engines, 1,050 bhp (780 kW) 2 × Schiffsunion electric motors, 780 shp (580 kW)
Speed	13.9 knots (25.7 km/h; 16.0 mph) surfaced 7.6 knots (14.1 km/h; 8.7 mph) submerged
Range	7,280 nmi (13,480 km; 8,380 mi) at 6 knots (11 km/h; 6.9 mph) surfaced 55 nmi (102 km; 63 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth	50 m (160 ft)
Complement	3 officers, 31 men
Armament	5 × 50 cm (19.7 in) torpedo tubes (4 bow, 1 stern) 10 torpedoes 1 × 10.5 cm (4.13 in) deck gun
Service record
Part of:	Mittelmeer I Flotilla 2 – 30 October 1918
Commanders:	Kptlt. Karl Neumann 11 June – 30 October 1918
Operations:	1 patrol
Victories:	2 merchant ships sunk (5,098 GRT)