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UB-148 at sea, a U-boat similar to UB-103.
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| History | |
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| 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 16 September 1918 at 50°52′N 1°27′E / 50.867°N 1.450°ECoordinates: 50°52′N 1°27′E / 50.867°N 1.450°E |
| General characteristics | |
| Class and type: | German Type UB III submarine |
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| Length: | 55.30 m (181 ft 5 in) (o/a) |
| Beam: | 5.80 m (19 ft) |
| Draught: | 3.70 m (12 ft 2 in) |
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| Test depth: | 50 m (160 ft) |
| Complement: | 3 officers, 31 men |
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| Service record | |
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| 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 into the German Imperial Navy 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.
She was built by Blohm & Voss of Hamburg and following just under a year of construction, launched at Hamburg on 7 July 1917. UB-103 was commissioned later the same year under the command of Kptlt. Paul Hundius. Like all Type UB III submarines, UB-103 carried 10 torpedoes and was armed with a 8.8 cm (3.46 in) deck gun. UB-103 would carry a crew of up to 3 officer and 31 men and had a cruising range of 7,420 nautical miles (13,740 km; 8,540 mi). UB-103 had a displacement of 510 t (500 long tons) while surfaced and 629 t (619 long tons) when submerged. Her engines enabled her to travel at 13.3 knots (24.6 km/h; 15.3 mph) when surfaced and 7.4 knots (13.7 km/h; 8.5 mph) when submerged.