SM UB-89
 UB-148 at sea, a U-boat similar to UB-89. | |
| Career (German Empire) |  |
|---|---|
| Name: | UB-89 |
| Ordered: | 6/8 February 1917[1] |
| Builder: | AG Vulcan, Hamburg[2] |
| Cost: | 3,654,000 German Papiermark[2] |
| Yard number: | 105[2] |
| Launched: | 22 December 1917[3] |
| Commissioned: | 25 February 1918[3] |
| Fate: | lost 21 October 1918 in collision with SMS Frankfurt[3] |
| General characteristics | |
| Class and type: | German Type UB III submarine |
| Type: | Coastal submarine |
| Displacement: | 510 t (502 long tons; 562 short tons) surfaced 640 t (630 long tons; 705 short tons) submerged[2] |
| Length: | 55.52 m (182.2 ft) o/a[2] |
| Beam: | 5.76 m (18.9 ft)[2] |
| Draught: | 3.73 m (12.2 ft)[2] |
| Propulsion: | 2 shafts 6-cylinder MAN-Vulcan diesel engines,[4] 1,100 ihp (820 kW) Siemens-Schuckert[4] electric motors, 788 ihp (588 kW)[2] |
| Speed: | 13 knots (24 km/h; 15 mph) surfaced 7.4 knots (13.7 km/h; 8.5 mph) submerged[2] |
| Range: | 7,120 nmi (13,190 km; 8,190 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 × 10.5 cm (4.13 in) deck gun[4] |
| Service record | |
|---|---|
| Part of: |
II Flotilla 5 May 1918 – 11 Nov 1918 |
| Commanders: |
Kptlt Walter Gude[5] 25 Feb 1918 – 11 Nov 1918 |
| Operations: | 3 patrols |
| Victories: | 2 merchant ships sunk (373 GRT) |
SM UB-89 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 25 February 1918 as SM UB-89.[nb 1]
UB-89 was lost in a collision with the light cruiser SMS Frankfurt in Kiel. Seven crew members perished in the accident. On 30 October 1918 the boat was raised by the salvage ship SMS Cyclop. On 7 March 1919, en route to surrender, UB-89 began to drift and was towed to Ymuiden. In 1920, the boat was broken up in Dortrecht[3]
Construction
he was built by AG Vulcan of Hamburg[2] and following just under a year of construction, launched at Hamburg on 22 December 1917. UB-89 was commissioned early the next year under the command of Kptlt Walter Gude. Like all Type UB III submarines, UB-89 carried 10 torpedoes and was armed with a 10.5 cm (4.13 in) deck gun. UB-89 would carry a crew of up to 3 officer and 31 men and had a cruising range of 7,120 nautical miles (13,190 km).[2] UB-89 had a displacement of 510 t (502 long tons; 562 short tons) while surfaced and 640 t (630 long tons; 705 short tons) when submerged. Her engines enabled her to travel at 13 knots (24 km/h; 15 mph) when surfaced and 7.4 knots (13.7 km/h; 8.5 mph) when submerged.[2]
Service history
Summary of Raiding Career
| Date | Name | Nationality | Tonnage (GRT) |
Fate[6] |
|---|---|---|---|---|
| 25 July 1918 | Asta |  Denmark |
121 | Sunk |
| 9 August 1918 | Emma |  Russian Empire |
252 | 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.