SM UB-103

	UB-148 at sea, a U-boat similar to UB-103.
History
German Empire
Name	UB-103
Ordered	6 / 8 February 1917
Builder	Blohm & Voss, Hamburg
Cost	3,714,000 German Papiermark
Yard number	309
Launched	7 July 1917
Commissioned	18 December 1917
Fate	Sunk 14 August 1918 at 50°52′N 1°27′E / 50.867°N 1.450°E
General characteristics
Class & type	Type UB III submarine
Displacement	510 t (500 long tons) surfaced; 629 t (619 long tons) submerged;
Length	55.30 m (181 ft 5 in) (o/a)
Beam	5.80 m (19 ft)
Draught	3.70 m (12 ft 2 in)
Propulsion	2 × propeller shaft; 2 × MAN-Vulcan four-stroke 6-cylinder diesel engines, 1,085 bhp (809 kW); 2 × Siemens-Schuckert electric motors, 780 shp (580 kW);
Speed	13.3 knots (24.6 km/h; 15.3 mph) surfaced; 7.5 knots (13.9 km/h; 8.6 mph) submerged;
Range	7,420 nmi (13,740 km; 8,540 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 × 8.8 cm (3.46 in) deck gun;
Service record
Part of:	Flandern I Flotilla; 8 March – 14 August 1918;
Commanders:	Kptlt. Paul Hundius; 18 December 1917 – 14 August 1918;
Operations:	6 patrols
Victories:	15 merchant ships sunk ; (25,999 GRT)

SM UB-103 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 on 18 December 1917 as SM UB-103.

UB-103 was sunk in the English Channel by British warships and SSZ 1, a SSZ class blimp. All hands were lost.

History
UB-148 at sea, a U-boat similar to UB-103.
German Empire
Name	UB-103
Ordered	6 / 8 February 1917
Builder	Blohm & Voss, Hamburg
Cost	3,714,000 German Papiermark
Yard number	309
Launched	7 July 1917
Commissioned	18 December 1917
Fate	Sunk 14 August 1918 at 50°52′N 1°27′E / 50.867°N 1.450°E / 50.867; 1.450
General characteristics
Class & type	Type UB III submarine
Displacement	510 t (500 long tons) surfaced 629 t (619 long tons) submerged
Length	55.30 m (181 ft 5 in) (o/a)
Beam	5.80 m (19 ft)
Draught	3.70 m (12 ft 2 in)
Propulsion	2 × propeller shaft 2 × MAN-Vulcan four-stroke 6-cylinder diesel engines, 1,085 bhp (809 kW) 2 × Siemens-Schuckert electric motors, 780 shp (580 kW)
Speed	13.3 knots (24.6 km/h; 15.3 mph) surfaced 7.5 knots (13.9 km/h; 8.6 mph) submerged
Range	7,420 nmi (13,740 km; 8,540 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 × 8.8 cm (3.46 in) deck gun
Service record
Part of:	Flandern I Flotilla 8 March – 14 August 1918
Commanders:	Kptlt. Paul Hundius 18 December 1917 – 14 August 1918
Operations:	6 patrols
Victories:	15 merchant ships sunk (25,999 GRT)