 SM UB-45, a U-boat similar to UB-30
|
| History |
|---|
 German Empire |
|---|
| Name | UB-30 |
| Ordered | 22 July 1915 |
| Builder | Blohm & Voss, Hamburg |
| Cost | 1,152,000 German Papiermark |
| Yard number | 254 |
| Launched | 16 November 1915 |
| Completed | 16 March 1916 |
| Commissioned | 18 March 1916 |
| Fate | Sunk 13 August 1918 by British warships |
| General characteristics |
|---|
| Class and type | German Type UB II submarine |
| Displacement |
- 274 t (270 long tons) surfaced
- 303 t (298 long tons) submerged
|
| Length | |
| Beam |
- 4.37 m (14 ft 4 in) o/a
- 3.85 m (12 ft 8 in) pressure hull
|
| Draught | 3.69 m (12 ft 1 in) |
| Propulsion | |
| Speed |
- 9.06 knots (16.78 km/h; 10.43 mph) surfaced
- 5.71 knots (10.57 km/h; 6.57 mph) submerged
|
| Range |
- 7,030 nmi (13,020 km; 8,090 mi) at 5 knots (9.3 km/h; 5.8 mph) surfaced
- 45 nmi (83 km; 52 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
|
| Test depth | 50 m (160 ft) |
| Complement | 2 officers, 21 men |
| Armament | |
| Notes | 42-second diving time |
| Service record |
| Part of: |
- Baltic Flotilla
- 8 May 1916 – 23 February 1917
- Flandern Flotilla
- 23 February 1917 – 13 August 1918
|
| Commanders: |
- Kptlt. Kurt Schapler[3]
- 18 March – 1 October 1916
- Oblt.z.S. Freiherr Cassius von Montigny[4]
- 2 October 1916 – 7 August 1917
- Kptlt. Wilhelm Rhein[5]
- 8 August 1917 – 21 April 1918
- Oblt.z.S. Rudolf Steir[6]
- 22 April – 13 August 1918
|
| Operations: |
19 patrols |
| Victories: |
- 18 merchant ships sunk
(19,650 GRT)
- 2 merchant ships damaged
(12,007 GRT)
|
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.
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 / 51.150°N 1.767°E / 51.150; 1.767 on 13 August 1918.
Design
A German 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).
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.
