SM UB-73
 UB-148 at sea, a U-boat similar to UB-73. | |
| History | |
|---|---|
 German Empire
| |
| Name: | UB-73 |
| Ordered: | 23 September 1916[1] |
| Builder: | AG Vulcan, Hamburg |
| Cost: | 3,337,000 German Papiermark |
| Yard number: | 97 |
| Launched: | 11 August 1917[2] |
| Commissioned: | 2 October 1917[2] |
| Fate: | surrendered to the French on 21 November 1918, broken up at Brest July 1921.[2] |
| General characteristics [2] | |
| Class & type: | German Type UB III submarine |
| Displacement: |
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| Length: | 55.52 m (182 ft 2 in) (o/a) |
| Beam: | 5.76 m (18 ft 11 in) |
| Draught: | 3.70 m (12 ft 2 in) |
| Propulsion: |
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| Speed: |
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| Range: |
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| Test depth: | 50 m (160 ft) |
| Complement: | 3 officers, 31 men[2] |
| Armament: |
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| Service record | |
| Part of: |
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| Commanders: | |
| Operations: | 6 patrols |
| Victories: |
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SM UB-73 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 2 October 1917 as SM UB-73.[nb 1]
UB-73 was serving in the Mediterranean. On 21 November 1918 she was surrendered to France as required by the regulations of the Armistice with Germany.[2]
Construction
UB-72 was ordered by the GIN on 23 September 1916.
She was built by AG Vulcan of Hamburg and following just under a year of construction, launched at Hamburg on 11 August 1917. UB-73 was commissioned later that same year . Like all Type UB III submarines, UB-73 carried 10 torpedoes and was armed with a 8.8 cm (3.46 in) deck gun. UB-73 would carry a crew of up to 3 officer and 31 men and had a cruising range of 8,420 nautical miles (15,590 km; 9,690 mi). UB-73 had a displacement of 508 t (500 long tons) while surfaced and 639 t (629 long 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.
Summary of raiding history
| Date | Name | Nationality | Tonnage (GRT) |
Fate[6] |
|---|---|---|---|---|
| 7 April 1918 | Catriena |  Netherlands |
115 | Sunk |
| 11 April 1918 | Myrtle Branch |  United Kingdom |
3,741 | Sunk |
| 14 April 1918 | Chelford | United Kingdom |
2,995 | Sunk |
| 16 April 1918 | Ladoga | United Kingdom |
1,917 | Sunk |
| 16 April 1918 | Lodaner | United Kingdom |
3,291 | Sunk |
| 18 April 1918 | Dalegarth Force | United Kingdom |
684 | Sunk |
| 23 June 1918 | Mountain Laurel |  Norway |
705 | Sunk |
| 24 June 1918 | HMS D6 |  Royal Navy |
495 | Sunk |
| 25 June 1918 | Orissa | United Kingdom |
5,358 | Sunk |
Notes
- ↑ "SM" stands for "Seiner Majestät" (English: His Majesty's) and combined with the U for Unterseeboot would be translated as His Majesty's Submarine.
References
- ↑ Rössler 1979, p. 61.
- 1 2 3 4 5 6 Gröner 1991, pp. 25-30.
- ↑ Helgason, Guðmundur. "Woldemar Adam". German and Austrian U-Boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 4 February 2015.
- ↑ Helgason, Guðmundur. "Karl Neureuther". German and Austrian U-Boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 4 February 2015.
- ↑ Helgason, Guðmundur. "Max Bräutigam". German and Austrian U-Boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 4 February 2015.
- ↑ Helgason, Guðmundur. "Ships hit by UB-73". German and Austrian U-Boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 4 February 2015.
Bibliography
- 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.
- Gröner, Erich; Jung, Dieter; Maass, Martin (1991). U-boats and Mine Warfare Vessels. German Warships 1815–1945 2. Translated by Thomas, Keith; Magowan, Rachel (London: Conway Maritime Press). ISBN 0-85177-593-4.
- 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.