U-9, a typical Type IIB boat |
| History |
|---|
| Nazi Germany |
|---|
| Name | U-20 |
| Ordered | 2 February 1935 |
| Builder | |
| Yard number | 550 |
| Laid down | 1 August 1935 |
| Launched | 14 January 1936 |
| Commissioned | 1 February 1936 |
| Fate | Scuttled 11 September 1944, off the coast of Turkey in the Black Sea |
| General characteristics |
|---|
| Class & type | Type IIB coastal submarine |
| Displacement |
- 279 t (275 long tons) surfaced
- 328 t (323 long tons) submerged
|
| Length | |
| Beam |
- 4.08 m (13 ft 5 in) (o/a)
- 4.00 m (13 ft 1 in) (pressure hull)
|
| Height | 8.60 m (28 ft 3 in) |
| Draught | 3.90 m (12 ft 10 in) |
| Installed power |
- 700 PS (510 kW; 690 bhp) (diesels)
- 410 PS (300 kW; 400 shp) (electric)
|
| Propulsion | |
| Speed |
- 13 knots (24 km/h; 15 mph) surfaced
- 7 knots (13 km/h; 8.1 mph) submerged
|
| Range |
- 1,800 nmi (3,300 km; 2,100 mi) at 12 knots (22 km/h; 14 mph) surfaced
- 35–43 nmi (65–80 km; 40–49 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
|
| Test depth | 80 m (260 ft) |
| Complement | 3 officers, 22 men |
| Armament | |
| Service record |
| Part of: |
|
| Identification codes: |
M 29 241 |
| Commanders: |
- Kptlt. Hans Eckermann
- 1 February 1936 – 30 September 1937
- Oblt.z.S. / Kptlt. Karl-Heinz Moehle
- 1 October 1937 – 17 January 1940
- Kptlt. Harro von Klot-Heydenfeldt
- 17 January – 15 April 1940
- Oblt.z.S. Heinrich Driver
- 2 – 15 April 1940
- Oblt.z.S. Hans-Jürgen Zetzsche
- 16 April – 7 June 1940
- Oblt.z.S. Ottokar Arnold Paulshen
- 8 June 1940 – 5 January 1941
- Kptlt. Herbert Schauenburg
- 6 January – 19 May 1941
- Oblt.z.S. Wolfgang Sträter
- 20 May – 4 December 1941
- Oblt.z.S. Kurt Nölke
- 5 December 1941 – 27 March 1942
- Oblt.z.S. / Kptlt. Clemens Schöler
- 7 May – 26 August 1942
- 27 May – 31 October 1943
- Oblt.z.S. Karl Grafen
- 1 November 1943 – 10 September 1944
|
| Operations: |
- 16 patrols:
- 1st patrol:
- a. 24 – 31 August 1939
- b. 1 – 20 September 1939
- 2nd patrol:
- a. 29 September – 17 October 1939
- b. 6 – 7 November 1939
- 3rd patrol:
- 18 – 24 November 1939
- 4th patrol:
- 7 – 13 December 1939
- 5th patrol:
- 6 – 16 January 1940
- 6th patrol:
- a. 21 January 1940
- b. 23 – 31 January 1940
- c. 4 February 1940
- 7th patrol:
- 27 February – 4 March 1940
- 8th patrol:
- a. 14 – 20 March 1940
- b. 21 – 22 March 1940
- 9th patrol:
- 22 – 29 June 1943
- 10th patrol:
- 11 July – 7 August 1943
- 11th patrol:
- a. 16 – 22 September 1943
- b. 24 September – 12 October 1943
- 12th patrol:
- 8 November – 9 December 1943
- 13th patrol:
- 1 – 26 January 1944
- 14th patrol:
- a. 22 February – 1 March 1944
- b. 2 – 27 March 1944
- 15th patrol:
- 11 June – 11 July 1944
- 16th patrol:
- 19 August – 10 September 1944
|
| Victories: |
- 12 merchant ships sunk
(30,058 GRT)
- 1 warship sunk
(9 tons)
- 2 merchant ships total loss
(8,446 GRT)
- 1 merchant ship damaged
(1,846 GRT)
|
German submarine U-20 was a Type IIB U-boat of Nazi Germany's Kriegsmarine. Her keel was laid down on 1 August 1935, by Germaniawerft of Kiel as yard number 550. She was commissioned on 1 February 1936. During World War II, she conducted operations against enemy shipping.
U-20 went on 16 war patrols, sinking 13 ships totalling 30,058 GRT and 9 tons , damaging one more of 1,846 GRT.
