SM UB-70
 UB-148 at sea, a U-boat similar to UB-70. | |
| Career (German Empire) |  |
|---|---|
| Name: | UB-70 |
| Ordered: | 20 May 1916[1] |
| Builder: | Friedrich Krupp Germaniawerft, Kiel[2] |
| Cost: | 3,276,000 German Papiermark[2] |
| Yard number: | 288[2] |
| Launched: | 7 August 1917[3] |
| Commissioned: | 12 October 1917[3] |
| Fate: | lost in the Mediterranean 8 May 1918, reasons unknown[3] |
| General characteristics | |
| Class and type: | German Type UB III submarine |
| Type: | Coastal submarine |
| Displacement: | 513 t (505 long tons; 565 short tons) surfaced 647 t (637 long tons; 713 short tons) submerged[2] |
| Length: | 55.83 m (183.2 ft) o/a[2] |
| Beam: | 5.8 m (19 ft)[2] |
| Draught: | 3.67 m (12.0 ft)[2] |
| Propulsion: | 2 shafts 6-cylinder MAN diesel engines,[4] 1,100 ihp (820 kW) Siemens-Schuckert[4] electric motors, 788 ihp (588 kW)[2] |
| Speed: | 13.2 knots (24.4 km/h; 15.2 mph) surfaced 7.6 knots (14.1 km/h; 8.7 mph) submerged[2] |
| Range: | 9,090 nmi (16,830 km; 10,460 mi) at 6 kn (11 km/h; 6.9 mph) surfaced 55 nmi (102 km; 63 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 | |
|---|---|
| Part of: |
I Flotilla Unknown – 5 May 1918 |
| Commanders: |
Kptlt Johannes Remy[5] 29 Oct 1917 – 5 May 1918 |
| Operations: | 2 patrols |
| Victories: | 1 merchant ship sunk (1,794 GRT) |
SM UB-70 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 29 October 1917 as SM UB-70.[nb 1]
UB-70 was serving in the Mediterranean when she was lost on 8 May 1918 for unknown reasons.[3]
Construction
She was built by Friedrich Krupp Germaniawerft of Kiel[2] and following just under a year of construction, launched at Kiel on 17 August 1917. UB-70 was commissioned later that same year under the command of Kptlt Johannes Remy. Like all Type UB III submarines, UB-70 carried 10 torpedoes and was armed with a 8.8 cm (3.46 in) deck gun. UB-70 would carry a crew of up to 3 officer and 31 men and had a cruising range of 9,090 nautical miles (16,830 km).[2] UB-70 had a displacement of 513 t (505 long tons; 565 short tons) while surfaced and 647 t (637 long tons; 713 short tons) when submerged. Her engines enabled her to travel at 13.2 knots (24.4 km/h; 15.2 mph) when surfaced and 7.6 knots (14.1 km/h; 8.7 mph) when submerged.[2]
Summary of Raiding Career
| Date | Name | Nationality | Tonnage (GRT) |
Fate[6] |
|---|---|---|---|---|
| 2 May 1918 | Valdivia |  France |
1,794 | Sunk |
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.