History | |
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Name | UC-69 |
Ordered | 12 January 1916[1] |
Builder | Blohm & Voss, Hamburg[2] |
Yard number | 285[1] |
Launched | 7 August 1916[1] |
Commissioned | 22 December 1916[1] |
Fate | Sunk after collision with U-96, 6 December 1917[1] |
General characteristics [3] | |
Class and type | Type UC II submarine |
Displacement | |
Length |
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Beam |
|
Draught | 3.64 m (11 ft 11 in) |
Propulsion |
|
Speed |
|
Range |
|
Test depth | 50 m (160 ft) |
Complement | 26 |
Armament |
|
Notes | 35-second diving time |
Service record | |
Part of: |
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Commanders: | |
Operations: | 9 patrols |
Victories: |
SM UC-69 was a German Type UC II minelaying submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 12 January 1916 and was launched on 7 August 1916. She was commissioned into the German Imperial Navy on 22 December 1916 as SM UC-69.[Note 1] In nine patrols UC-69 was credited with sinking 54 ships, either by torpedo or by mines laid. UC-69 was sunk after being accidentally rammed by U-96 near Barfleur on 6 December 1917. The wreck was accidentally discovered in November 2017 by the Dutch naval mine sweeper Zr.Ms. Makkum which was mapping the sea-bed off the French Normandy coast.[1]
Design
A Type UC II submarine, UC-69 had a displacement of 427 tonnes (420 long tons) when at the surface and 508 tonnes (500 long tons) while submerged. She had a length overall of 50.35 m (165 ft 2 in), a beam of 5.22 m (17 ft 2 in), and a draught of 3.64 m (11 ft 11 in). The submarine was powered by two six-cylinder four-stroke diesel engines each producing 300 metric horsepower (220 kW; 300 shp) (a total of 600 metric horsepower (440 kW; 590 shp)), two electric motors producing 620 metric horsepower (460 kW; 610 shp), and two propeller shafts. She had a dive time of 48 seconds and was capable of operating at a depth of 50 metres (160 ft).[3]
The submarine had a maximum surface speed of 12 knots (22 km/h; 14 mph) and a submerged speed of 7.4 knots (13.7 km/h; 8.5 mph). When submerged, she could operate for 52 nautical miles (96 km; 60 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 10,420 nautical miles (19,300 km; 11,990 mi) at 7 knots (13 km/h; 8.1 mph). UC-69 was fitted with six 100 centimetres (39 in) mine tubes, eighteen UC 200 mines, three 50 centimetres (20 in) torpedo tubes (one on the stern and two on the bow), seven torpedoes, and one 8.8 cm (3.5 in) Uk L/30 deck gun. Her complement was twenty-six crew members.[3]
Summary of raiding history
Date | Name | Nationality | Tonnage[Note 2] | Fate[6] |
---|---|---|---|---|
12 March 1917 | HMS Skate | ![]() |
975 | Damaged |
25 March 1917 | Huntleys | ![]() |
186 | Sunk |
25 March 1917 | Mary Annie | ![]() |
154 | Sunk |
26 March 1917 | Norma | ![]() |
1,443 | Sunk |
27 March 1917 | Aasta | ![]() |
1,146 | Sunk |
27 March 1917 | Grib | ![]() |
1,474 | Sunk |
27 March 1917 | Thracia | ![]() |
2,891 | Sunk |
28 March 1917 | Katina | ![]() |
2,464 | Sunk |
29 March 1917 | Morild I | ![]() |
1,354 | Sunk |
30 March 1917 | Avanguardia | ![]() |
2,703 | Sunk |
30 March 1917 | Britta | ![]() |
2,061 | Sunk |
31 March 1917 | Farmand | ![]() |
1,387 | Sunk |
1 May 1917 | Barreiro | ![]() |
1,738 | Sunk |
3 May 1917 | Maria | ![]() |
2,754 | Sunk |
3 May 1917 | Polstad | ![]() |
2,692 | Sunk |
4 May 1917 | Ilva | ![]() |
2,140 | Sunk |
4 May 1917 | Ioannis P. Goulandris | ![]() |
3,153 | Sunk |
4 May 1917 | Tromp | ![]() |
2,751 | Sunk |
6 May 1917 | Gurth | ![]() |
1,340 | Sunk |
6 May 1917 | Voss | ![]() |
2,390 | Sunk |
7 May 1917 | Leikanger | ![]() |
3,544 | Sunk |
7 May 1917 | Tiger | ![]() |
3,273 | Sunk |
22 May 1917 | Nann Smith | ![]() |
2,093 | Sunk |
12 June 1917 | Alexandre | ![]() |
697 | Sunk |
14 June 1917 | Hasting | ![]() |
983 | Sunk |
15 June 1917 | Addah | ![]() |
4,397 | Sunk |
16 June 1917 | La Tour D’agon | ![]() |
125 | Sunk |
17 June 1917 | Marguerite VI | ![]() |
862 | Damaged |
19 June 1917 | Bearn | ![]() |
1,288 | Sunk |
19 June 1917 | Spind | ![]() |
1,174 | Sunk |
20 June 1917 | Katerina | ![]() |
3,092 | Sunk |
21 June 1917 | E. T. Nygaard | ![]() |
1,923 | Sunk |
24 June 1917 | Cabo Verde | ![]() |
2,220 | Sunk |
24 June 1917 | Helma | ![]() |
1,131 | Sunk |
10 July 1917 | Kansan | ![]() |
7,913 | Sunk |
20 July 1917 | Kageshima Maru | ![]() |
4,697 | Sunk |
23 July 1917 | Frithjof | ![]() |
1,389 | Sunk |
24 July 1917 | Sir Walter | ![]() |
492 | Sunk |
25 July 1917 | Baldwin | ![]() |
1,130 | Sunk |
26 July 1917 | Bertha | ![]() |
107 | Sunk |
26 July 1917 | Locksley | ![]() |
2,487 | Sunk |
26 July 1917 | Venturoso | ![]() |
290 | Sunk |
28 July 1917 | Hildur | ![]() |
961 | Sunk |
29 July 1917 | Gyldenpris | ![]() |
2,667 | Sunk |
10 August 1917 | War Patrol | ![]() |
2,045 | Sunk |
1 September 1917 | Erato | ![]() |
2,041 | Sunk |
2 September 1917 | Ker Durand | ![]() |
56 | Sunk |
2 September 1917 | Rytonhall | ![]() |
4,203 | Sunk |
4 September 1917 | Sadi Carnot | ![]() |
354 | Sunk |
5 September 1917 | Alesia | ![]() |
6,006 | Damaged |
15 September 1917 | Sommeina | ![]() |
3,317 | Sunk |
26 September 1917 | Acorn | ![]() |
112 | Sunk |
26 September 1917 | Port Victor | ![]() |
7,280 | Damaged |
6 October 1917 | Lamartine | ![]() |
424 | Sunk |
6 October 1917 | Le Coq | ![]() |
3,419 | Damaged |
2 November 1917 | Farraline | ![]() |
1,226 | Sunk |
27 November 1917 | Gladys | ![]() |
179 | Sunk |
9 February 1918 | Fantoft | ![]() |
1,034 | Sunk |
19 September 1918 | Belliqueux | ![]() |
Unknown | Sunk |
References
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.
- ^ Merchant ship tonnages are in gross register tons. Military vessels are listed by tons displacement.
Citations
- ^ a b c d e f Helgason, Guðmundur. "WWI U-boats: UC 69". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 23 February 2009.
- ^ Tarrant, p. 173.
- ^ a b c Gröner 1991, pp. 31–32.
- ^ Helgason, Guðmundur. "WWI U-boat commanders: Erwin Waßner (Pour le Mérite)". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 3 March 2015.
- ^ Helgason, Guðmundur. "WWI U-boat commanders: Hugo Thielmann". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 3 March 2015.
- ^ Helgason, Guðmundur. "Ships hit by UC 69". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 3 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.