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SM UB-30[Note 1] was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 22 July 1915 and launched on 16 November 1915. She was commissioned into the German Imperial Navy on 18 March 1916 as SM UB-30.
![]() SM UB-45, a U-boat similar to UB-30 | |
History | |
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Name | UB-30 |
Ordered | 22 July 1915[1] |
Builder | Blohm & Voss, Hamburg[1] |
Cost | 1,152,000 German Papiermark[2] |
Yard number | 254[1] |
Launched | 16 November 1915[1] |
Completed | 16 March 1916[1] |
Commissioned | 18 March 1916[2] |
Fate | Sunk 13 August 1918 by British warships[2] |
General characteristics [2] | |
Class and type | Type UB II submarine |
Displacement | |
Length |
|
Beam |
|
Draught | 3.69 m (12 ft 1 in) |
Propulsion |
|
Speed |
|
Range |
|
Test depth | 50 m (160 ft) |
Complement | 2 officers, 21 men |
Armament |
|
Notes | 42-second diving time |
Service record | |
Part of: |
|
Commanders: | |
Operations: | 19 patrols |
Victories: |
The submarine sank 18 ships in 19 patrols. They included the William Cory & Son collier SS Vernon in the North Sea off Spurn on 31 August 1917[7] and the Witherington and Everett Steam Ship Company collier SS Lightfoot in the English Channel off Selsey Bill on 16 March 1918.[8]
UB-30 was sunk by two depth charges from HMS Landrail south of Goodwin Sands at 51°9′N 1°46′E on 13 August 1918.[2]
A Type UB II submarine, UB-30 had a displacement of 274 tonnes (270 long tons) when at the surface and 303 tonnes (298 long tons) while submerged. She had a total length of 36.90 m (121 ft 1 in), a beam of 4.37 m (14 ft 4 in), and a draught of 3.69 m (12 ft 1 in). The submarine was powered by two Benz six-cylinder diesel engines producing a total 270 metric horsepower (270 shp; 200 kW), two Siemens-Schuckert electric motors producing 280 metric horsepower (210 kW; 280 shp), and one propeller shaft. She was capable of operating at depths of up to 50 metres (160 ft).[2]
The submarine had a maximum surface speed of 9.06 knots (16.78 km/h; 10.43 mph) and a maximum submerged speed of 5.71 knots (10.57 km/h; 6.57 mph). When submerged, she could operate for 45 nautical miles (83 km; 52 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 7,030 nautical miles (13,020 km; 8,090 mi) at 5 knots (9.3 km/h; 5.8 mph). UB-30 was fitted with two 50 centimetres (20 in) torpedo tubes, four torpedoes, and one 8.8 cm (3.5 in) Uk L/30 deck gun. She had a complement of twenty-one crew members and two officers and a 42-second dive time.[2]
Date | Name | Nationality | Tonnage[Note 2] | Fate[9] |
---|---|---|---|---|
21 October 1916 | August | ![]() |
346 | Sunk |
23 October 1916 | Elly | ![]() |
88 | Sunk |
24 October 1916 | Elin | ![]() |
127 | Sunk |
24 October 1916 | Ingersoll | ![]() |
239 | Sunk |
24 October 1916 | Jenny Lind | ![]() |
53 | Sunk |
24 October 1916 | Urpo | ![]() |
111 | Sunk |
31 August 1917 | Vernon | ![]() |
982 | Sunk |
3 September 1917 | Ragnhild | ![]() |
1,495 | Sunk |
26 September 1917 | S.N.A. 3 | ![]() |
1,709 | Sunk |
12 November 1917 | Morning Star | ![]() |
129 | Sunk |
3 January 1918 | Gartland | ![]() |
2,613 | Sunk |
5 January 1918 | Glenarm Head | ![]() |
3,908 | Sunk |
12 January 1918 | Whorlton | ![]() |
1,469 | Sunk |
2 February 1918 | Jaffa | ![]() |
1,383 | Sunk |
9 February 1918 | Armenia | ![]() |
5,463 | Damaged |
5 March 1918 | Clan Mackenzie | ![]() |
6,544 | Damaged |
7 March 1918 | Braatt II | ![]() |
1,834 | Sunk |
16 March 1918 | Lightfoot | ![]() |
1,873 | Sunk |
18 June 1918 | Norfolk Coast | ![]() |
782 | Sunk |
10 August 1918 | Madame Renee | ![]() |
509 | Sunk |
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