SM UB-51
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 UB-148 at sea, a U-boat similar to UB-51. | |
| History | |
|---|---|
 German Empire | |
| Name | UB-51 |
| Ordered | 20 May 1916[1] |
| Builder | Blohm & Voss, Hamburg |
| Cost | 3,276,000 German Papiermark |
| Yard number | 296 |
| Launched | 8 March 1917[2] |
| Commissioned | 26 July 1917[2] |
| Fate | Surrendered 16 January 1919; broken up at Swansea[2] |
| General characteristics [2] | |
| Class & type | Type UB III submarine |
| Displacement | |
| 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 |
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| Speed |
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| Range |
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| Test depth | 50 m (160 ft) |
| Complement | 3 officers, 31 men[2] |
| Armament |
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| Service record | |
| Part of |
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| Commanders |
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| Operations | 6 patrols |
| Victories | |
SM UB-51 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 Pola Flotilla of the German Imperial Navy on 26 July 1917 as SM UB-51.[Note 1]
She operated as part of the Pola Flotilla based in Cattaro. UB-51 was surrendered 16 January 1919 with the remainder of the Pola Flotilla following orders by Admiral Reinhard Scheer to return to port. UB-51 was later broken up at Swansea.[2]
UB-51 was ordered by the GIN on 20 May 1916. She was built by Blohm & Voss, Hamburg and following just under a year of construction, launched at Hamburg on 8 March 1917. UB-51 was commissioned later that same year under the command of Kptlt. Ernst Krafft. Like all Type UB III submarines, UB-51 carried 10 torpedoes and was armed with a 8.8 cm (3.46 in) deck gun. UB-51 would carry a crew of up to 3 officer and 31 men and had a cruising range of 9,040 nautical miles (16,740 km; 10,400 mi). UB-51 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.
