SM UB-50

UB-148 at sea, a U-boat similar to UB-50.
History
German Empire
Name:	UB-50
Ordered:	20 May 1916
Builder:	Blohm & Voss, Hamburg
Cost:	3,276,000 German Papiermark
Yard number:	295
Launched:	6 January 1917
Commissioned:	12 July 1917
Fate:	surrendered 16 January 1919; broken up at Swansea
General characteristics
Class and type:	German Type UB III submarine
Displacement:	516 t (508 long tons) surfaced 651 t (641 long tons) submerged
Length:	55.30 m (181 ft 5 in) (o/a)
Beam:	5.80 m (19 ft)
Draught:	3.68 m (12 ft 1 in)
Propulsion:	2 × propeller shaft 2 × MAN four-stroke 6-cylinder diesel engine, 1,050 bhp (780 kW) 2 × Siemens-Schuckert electric motor, 780 shp (580 kW)
Speed:	13.6 knots (25.2 km/h; 15.7 mph) surfaced 8 knots (15 km/h; 9.2 mph) submerged
Range:	9,040 nmi (16,740 km; 10,400 mi) at 5 knots (9.3 km/h; 5.8 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:	Pola/Mittelmeer II Flotilla 30 September 1917 – 11 November 1918
Commanders:	Kptlt. Franz Becker 12 July 1917 – 30 June 1918 Oblt.z.S. Heinrich Kukat 1 July – 29 November 1918
Operations:	7 patrols
Victories:	39 merchant ships sunk (98,071 GRT) 7 merchant ships damaged (25,172 GRT) 1 warship sunk (16,350 tons)

55.30 m (181 ft 5 in) (o/a)

SM UB-50 was a German Type UB III submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 20 May 1916. She was commissioned into the Pola Flotilla of the German Imperial Navy on 12 July 1917 as SM UB-50.

The submarine conducted seven patrols and sank 38 ships during the war for a total loss of 97,284 gross register tons (GRT). She operated as part of the Pola Flotilla based in Cattaro. UB-50 surrendered on 16 January 1919 with the remainder of the Pola Flotilla following an order by Admiral Reinhard Scheer to return to port. During her passage through the Straits of Gibraltar, she managed to sink the battleship HMS Britannia. UB-50 was later broken up at Swansea.

UB-50 was ordered by the German Imperial Navy on 20 May 1916. She was built by Blohm & Voss, Hamburg and following just under a year of construction, launched at Hamburg on 6 January 1917. UB-50 was commissioned later that same year under the command of Kapitänleutnant (Kptlt.) Franz Becker. Like all Type UB III submarines, UB-50 carried 10 torpedoes and was armed with an 8.8 cm (3.5 in) SK L/30 deck gun. UB-50 could carry a crew of up to 34 men and had a cruising range of 9,040 nautical miles (16,740 km; 10,400 mi).UB-50 had a displacement of 516 t (508 long tons) while surfaced and 651 t (641 long tons) when submerged. Her engines enabled her to travel at 13.6 knots (25.2 km/h; 15.7 mph) when surfaced and 8 knots (15 km/h; 9.2 mph) when submerged.