SM UB-84
 UB-148 at sea, a U-boat similar to UB-84. | |
| Career (German Empire) |  |
|---|---|
| Name: | UB-84 |
| Ordered: | 23 September 1916[1] |
| Builder: | AG Weser, Bremen[2] |
| Cost: | 3,341,000 German Papiermark[2] |
| Yard number: | 284[2] |
| Launched: | 3 October 1917[3] |
| Commissioned: | 31 October 1917[3] |
| Fate: | lost in collision, 7 December 1917 at 54°35′N 10°11′E / 54.583°N 10.183°ECoordinates: 54°35′N 10°11′E / 54.583°N 10.183°E, raised, training boat, surrendered 26 November 1918, broken up[3] |
| General characteristics | |
| Class and type: | German Type UB III submarine |
| Type: | Coastal submarine |
| Displacement: | 516 t (508 long tons; 569 short tons) surfaced 647 t (637 long tons; 713 short tons) submerged[2] |
| Length: | 55.85 m (183.2 ft) o/a[2] |
| Beam: | 5.8 m (19 ft)[2] |
| Draught: | 3.72 m (12.2 ft)[2] |
| Propulsion: | 2 shafts 6-cylinder Daimler diesel engines,[4] 1,060 ihp (790 kW) Brown, Boveri & Cie[4] electric motors, 788 ihp (588 kW)[2] |
| Speed: | 13.4 knots (24.8 km/h; 15.4 mph) surfaced 7.5 knots (13.9 km/h; 8.6 mph) submerged[2] |
| Range: | 8,180 nmi (15,150 km; 9,410 mi) at 6 kn (11 km/h; 6.9 mph) surfaced 50 nmi (93 km; 58 mi) at 4 kn (7.4 km/h; 4.6 mph) submerged[2] |
| Test depth: | 50 m (160 ft)[4] |
| Complement: | 3 officers, 31 men[4] |
| Armament: | • 5 × 50 cm (19.7 in) torpedo tubes (4 bow, 1 stern) with 10 torpedoes • 1 × 8.8 cm (3.46 in) deck gun[4] |
| Service record | |
|---|---|
| Commanders: |
Kptlt Max Bräutigam[5] 31 Oct 1917 – 1 Dec 1917 |
| Operations: | No patrols |
| Victories: | None |
SM UB-84 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 31 October 1917 as SM UB-84.[nb 1]
UB-84 was lost in a collision on 7 December 1917 in the Baltic Sea at 54°35′N 10°11′E / 54.583°N 10.183°E. She was later raised and used as a training boat. On 26 November 1918 she was surrendered to the French in accordance with the requirements of the Armistice with Germany and broken up in Brest in 1921.[3]
Construction
She was built by AG Weser of Bremen[2] and following just under a year of construction, launched at Bremen on 3 October 1917. UB-84 was commissioned later that same year under the command of Kptlt Max Bräutigam. Like all Type UB III submarines, UB-84 carried 10 torpedoes and was armed with a 8.8 cm (3.46 in) deck gun. UB-84 would carry a crew of up to 3 officer and 31 men and had a cruising range of 8,180 nautical miles (15,150 km).[2] UB-84 had a displacement of 516 t (508 long tons; 569 short tons) while surfaced and 647 t (637 long tons; 713 short tons) when submerged. Her engines enabled her to travel at 13.4 knots (24.8 km/h; 15.4 mph) when surfaced and 7.5 knots (13.9 km/h; 8.6 mph) when submerged.[2]
Notes
- Footnotes
- ↑ "SM" stands for "Seiner Majestät" (English: His Majesty's) and combined with the U for Unterseeboot would be translated as His Majesty's Submarine.
- Citations
References
- Gröner, Erich (1985). U-Boote, Hilfskreuzer, Minenschiffe, Netzleger, Sperrbrecher. Die deutschen Kriegsschiffe, 1815-1945 (in German) III (Koblenz: Bernard & Graefe). ISBN 3-7637-4802-4.
- Bendert, Harald (2000). Die UB-Boote der Kaiserlichen Marine, 1914-1918. Einsätze, Erfolge, Schicksal (in German). Hamburg: Verlag E.S. Mittler & Sohn GmbH. ISBN 3-8132-0713-7.
- Rössler, Eberhard (1979). U-Bootbau bis Ende des 1. Weltkrieges, Konstruktionen für das Ausland und die Jahre 1935 - 1945. Die deutschen U-Boote und ihre Werften (in German) I (Munich: Bernard & Graefe). ISBN 3-7637-5213-7.