SM U-89
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| History | |
|---|---|
 German Empire |
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| Name: | U-89 |
| Ordered: | 23 June 1915 |
| Builder: | Kaiserliche Werft Danzig |
| Yard number: | 33 |
| Laid down: | 15 December 1915 |
| Launched: | 6 October 1916 |
| Commissioned: | 21 June 1917 |
| Fate: | Rammed and sunk 12 February 1918 |
| General characteristics [1] | |
| Class & type: | German Type U 87 submarine |
| Displacement: |
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| Length: |
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| Beam: |
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| Height: | 9.35 m (30 ft 8 in) |
| Draught: | 3.88 m (12 ft 9 in) |
| Installed power: | |
| Propulsion: | 2 shafts, 2 × 1.66 m (5 ft 5 in) propellers |
| Speed: |
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| Range: |
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| Test depth: | 50 m (164 ft 1 in) |
| Complement: | 4 officers, 32 enlisted |
| Armament: |
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| Service record | |
| Part of: |
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| Commanders: | |
| Operations: | 3 patrols |
| Victories: | |
SM U-89 was one of the 329 submarines serving in the Imperial German Navy in World War I. U-89 was engaged in the naval warfare and took part in the First Battle of the Atlantic.[4] On 12 February 1918, U-89 was rammed and sunk by HMS Roxburgh off Malin Head. There were no survivors.
Design
German Type U 87 submarines were preceded by the shorter Type U 81 submarines. U-89 had a displacement of 757 tonnes (745 long tons) when at the surface and 998 tonnes (982 long tons) while submerged.[1] It had a total length of 215 ft 11 in (65.81 m), a pressure hull length of 164 ft 3 in (50.06 m), a beam of 20 ft 4 in (6.20 m), a height of 30 ft 8 in (9.35 m), and a draught of 12 ft 9 in (3.89 m). The submarine was powered by two 2,400 metric horsepower (1,800 kW; 2,400 shp) engines for use while surfaced, and two 1,200 metric horsepower (880 kW; 1,200 shp) engines for use while submerged. It had two shafts and two 1.66 m (5.4 ft) propellers. It was capable of operating at depths of up to 50 metres (160 ft).[1]
The submarine had a maximum surface speed of 16.8 knots (31.1 km/h; 19.3 mph) and a maximum submerged speed of 9.1 knots (16.9 km/h; 10.5 mph).[1] When submerged, it could operate for 56 nautical miles (104 km; 64 mi) at 5 knots (9.3 km/h; 5.8 mph); when surfaced, it could travel 11,380 nautical miles (21,080 km; 13,100 mi) at 8 knots (15 km/h; 9.2 mph). U-89 was fitted with four 50 centimetres (20 in) torpedo tubes (two at the bow and two at the stern), ten to twelve torpedoes, one 10.5 centimetres (4.1 in) deck machine gun, and one 8.8 centimetres (3.5 in) deck machine gun. It had a complement of thirty-six (thirty-two crew members and four officers).[1]
Summary of raiding career
| Date | Name | Nationality | Tonnage (GRT) |
Fate[5] |
|---|---|---|---|---|
| 2 October 1917 | Trafaria |  Portugal |
1,744 | Sunk |
| 3 October 1917 | Baron Blantyre |  United Kingdom |
1,844 | Sunk |
| 6 October 1917 | Victorine |  France |
1,241 | Sunk |
| 12 December 1917 | Reine D'arvor | France |
324 | Damaged |
| 21 December 1917 | Boa Vista | Portugal |
3,667 | Sunk |
References
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- ↑ 1.0 1.1 1.2 1.3 1.4 Gröner 1985, pp. 38-39.
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