SM UC-8

For other ships with the same name, see German submarine U-8.

The UC-8 in Dutch service as HNLMS M 1
History
German Empire
Name	UC-8
Ordered	November 1914 [1]
Builder	AG Vulcan, Hamburg [2]
Yard number	52 [1]
Launched	6 July 1915 [1]
Commissioned	5 July 1915 [1]
Fate	Grounded on Dutch coast, 4 November 1915; interned [1]
Netherlands
Name	M 1 [3]
Owner	Royal Netherlands Navy
Acquired	1917 [4]
Commissioned	13 March 1917 [5]
Fate	Broken up in 1932 [1]
General characteristics [6]
Class & type	Type UC I submarine
Displacement	168  t (165 long tons), surfaced 183 t (180 long tons), submerged
Length	33.99 m (111 ft 6 in) o/a 29.62 m (97 ft 2 in) pressure hull
Beam	3.15 m (10 ft 4 in)
Draft	3.04 m (10 ft)
Propulsion	1 × propeller shaft 1 × 6-cylinder, 4-stroke diesel engine, 90 PS (66 kW; 89 bhp) 1 × electric motor, 175 PS (129 kW; 173 shp)
Speed	6.20 knots (11.48 km/h; 7.13 mph), surfaced 5.22 knots (9.67 km/h; 6.01 mph), submerged
Range	780  nmi (1,440 km; 900 mi) at 5 knots (9.3 km/h; 5.8 mph) surfaced 50 nmi (93 km; 58 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth	50 m (160 ft)
Complement	14
Armament	6 × 100 cm (39 in) mine tubes 12 × UC 120 mines 1 × 7.92 mm (0.312 in) machine gun
Service record
Part of	I Flotilla Unknown – 4 November 1915
Commanders	Oblt.z.S. Georg Haag [7] 5 July – 17 October 1915 Oblt.z.S. Walter Gottfried Schmidt [8] 18 October – 4 November 1915
Operations	1 patrol
Victories	None

SM UC-8 was a German Type UC I minelayer submarine or U-boat in the German Imperial Navy (German : Kaiserliche Marine) during World War I. The U-boat had been ordered by November 1914 and was launched on 6 July 1915. She was commissioned into the German Imperial Navy on 5 July 1915 as SM UC-8. ^{[Note 1]} Mines laid by UC-8 in her one patrol are not known to have sunk any ships. UC-8 ran aground on the Dutch coast near Terschelling on 4 November 1915. Interned by the Dutch, UC-8 was purchased and commissioned into the Dutch Navy as HNLMS M 1. ^[3] The submarine was broken up in 1932. ^[1]

Design

A Type UC I submarine, UC-8 had a displacement of 168 tonnes (165 long tons) when at the surface and 183 tonnes (180 long tons) while submerged. She had a length overall of 33.99 m (111 ft 6 in), a beam of 3.15 m (10 ft 4 in), and a draught of 3.04 m (10 ft). The submarine was powered by one Daimler-Motoren-Gesellschaft six-cylinder, four-stroke diesel engine producing 90 metric horsepower (66 kW; 89 shp), an electric motor producing 175 metric horsepower (129 kW; 173 shp), and one propeller shaft. She was capable of operating at a depth of 50 metres (160 ft). ^[6]

The submarine had a maximum surface speed of 6.20 knots (11.48 km/h; 7.13 mph) and a maximum submerged speed of 5.22 knots (9.67 km/h; 6.01 mph). When submerged, she could operate for 50 nautical miles (93 km; 58 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 780 nautical miles (1,440 km; 900 mi) at 5 knots (9.3 km/h; 5.8 mph). UC-8 was fitted with six 100 centimetres (39 in) mine tubes, twelve UC 120 mines, and one 8 millimetres (0.31 in) machine gun. She was built by AG Vulcan Stettin and her complement was fourteen crew members. ^[6]

Notes

1. "SM" stands for "Seiner Majestät" (English: His Majesty's) and combined with the U for Unterseeboot would be translated as His Majesty's Submarine.^{[ citation needed ]}

References

1. Helgason, Guðmundur. "WWI U-boats: UC 8". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 20 February 2009.
2. Tarrant, p. 173.
3. Horneman, Gerard (September 2008). "Een Duitse onderzeeboot onder Nederlandse vlag" (PDF). Klaar Voor Onderwater (in Dutch). Vol. 30, no. 105. Den Helder: Onderzeedienst Reünistenvereniging. pp. 3–7.
4. Roetering, p. 14.
5. Jalhay, p. 107.
6. Gröner 1991, pp. 30–31.
7. Helgason, Guðmundur. "WWI U-boat commanders: Georg Haag". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 8 March 2015.
8. Helgason, Guðmundur. "WWI U-boat commanders: Walter Gottfried Schmidt". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 8 March 2015.

Bibliography

• Bendert, Harald (2001). Die UC-Boote der Kaiserlichen Marine 1914-1918. Minenkrieg mit U-Booten (in German). Hamburg, Berlin, Bonn: Mittler. ISBN   3-8132-0758-7.
• Gröner, Erich; Jung, Dieter; Maass, Martin (1991). U-boats and Mine Warfare Vessels. German Warships 1815–1945. Vol. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN   0-85177-593-4.
• Gardiner, Robert; Gray, Randal, eds. (1985). Conway's All the World's Fighting Ships 1906–1921. Annapolis, Maryland: Naval Institute Press. ISBN   978-0-87021-907-8. OCLC   12119866.
• Tarrant, V. E. (1989). The U-Boat Offensive: 1914–1945. Annapolis, Maryland: Naval Institute Press. ISBN   978-0-87021-764-7. OCLC   20338385.
• Roetering, B., ed. (1997). Mijnendienst 1907-1997 90 jaar: feiten, verhalen en anekdotes uit het negentigjarig bestaan van de Mijnendienst van de Koninklijke Marine (in Dutch). Roetering. ISBN   90-90-10528-X.
• Jalhay, P.C. (1982). Nederlandse Onderzeedienst 75 jaar (in Dutch). Bussum: De Boer Maritiem. ISBN   90-228-1864-0.