Coordinates: 51°13.5′N 2°56′E / 51.2250°N 2.933°E / 51.2250; 2.933

SM UB-40

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For other ships with the same name, see German submarine U-40.
File:SM UB 45.jpg
SM UB-45 a U-boat similar to UB-40
History
File:War Ensign of Germany 1903-1918.svgGerman Empire
NameUB-40
Ordered22 July 1915[1]
BuilderBlohm & Voss, Hamburg[1]
Cost1,152,000 German Papiermark[2]
Yard number264[3]
Launched25 April 1916[3]
Completed18 August 1916[3]
Commissioned17 August 1916[2]
FateScuttled during the retreat from Belgium, 5 October 1918[2]
General characteristics
Class & typeType 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
Draught3.69 m (12 ft 1 in)
Propulsion
Speed
  • 9.15 knots (16.95 km/h; 10.53 mph) surfaced
  • 5.81 knots (10.76 km/h; 6.69 mph) submerged
Range
  • 6,450 nmi (11,950 km; 7,420 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 depth50 m (160 ft)
Complement2 officers, 21 men
Armament
Notes42-second diving time
Service record[4]
Part of
  • Flandern Flotilla
  • 10 March 1916 – 2 October 1918
Commanders
  • Oblt.z.S. Karl Neumann
  • 17 August – 2 December 1916
  • Oblt.z.S. Hans Howaldt
  • 3 December 1916 – 14 December 1917
  • Oblt.z.S. Karl Dobberstein
  • 15 December 1917 – 17 May 1918
  • Oblt.z.S. Hans Joachim Emsmann
  • 18 May – 31 July 1918
Operations28 patrols
Victories
  • 99 merchant ships sunk
    (129,330 GRT)
  • 1 auxiliary warship sunk
    (6,287 GRT)
  • 16 merchant ships damaged
    (60,629 GRT)
  • 1 merchant ship taken as prize
    (470 GRT)

SM UB-40[Note 1] was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I.

Design

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A Type UB II submarine, UB-40 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 Körting six-cylinder diesel engines producing a total 284 metric horsepower (280 shp; 209 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 9.15 knots (16.95 km/h; 10.53 mph) and a maximum submerged speed of 5.81 knots (10.76 km/h; 6.69 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 6,450 nautical miles (11,950 km; 7,420 mi) at 5 knots (9.3 km/h; 5.8 mph). UB-40 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]

Construction and career

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The U-boat was ordered on 22 July 1915 and launched on 25 April 1916. She was commissioned into the German Imperial Navy on 17 August 1916 as SM UB-40.[Note 2]

The submarine sank 100 ships in 28 patrols. UB-40 was scuttled in Ostend when the German army retreated from Belgium on 5 October 1918.[2]

The wreck of UB-40 has been located & identified by divers in the recent years.[5]

Summary of raiding history

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Date Name Nationality Tonnage[Note 3] Fate[6]
20 October 1916 Barbara File:Civil Ensign of the United Kingdom.svg United Kingdom 3,740 Sunk
21 October 1916 Cock O’ the Walk File:Civil Ensign of the United Kingdom.svg United Kingdom 111 Sunk
22 October 1916 Maris Stella File:Flag of France.svg France 106 Sunk
22 October 1916 Risøy File:Flag of Norway.svg Norway 1,129 Sunk
7 November 1916 Reime File:Flag of Norway.svg Norway 1,913 Sunk
8 November 1916 Killellan File:Civil Ensign of the United Kingdom.svg United Kingdom 1,971 Sunk
16 November 1916 Alphonse Marceline File:Flag of Belgium (civil).svg Belgium 60 Sunk
16 November 1916 Vanguard File:Civil Ensign of the United Kingdom.svg United Kingdom 142 Sunk
17 November 1916 Saint Rogatien File:Flag of France.svg France 1,581 Sunk
21 November 1916 Alice File:Flag of France.svg France 822 Sunk
21 November 1916 Palm Beach File:Civil Ensign of the United Kingdom.svg United Kingdom 3,891 Damaged
22 November 1916 Houlgate File:Flag of France.svg France 1,550 Sunk
22 November 1916 City of Mexico File:Flag of Norway.svg Norway 1,511 Sunk
22 November 1916 Grenada File:Civil Ensign of the United Kingdom.svg United Kingdom 2,268 Sunk
28 December 1916 Oldambt File:Flag of the Netherlands.svg Netherlands 470 Captured as prize
5 February 1917 Anna Prosper File:Flag of Belgium (civil).svg Belgium 70 Sunk
5 February 1917 Emerald File:Civil Ensign of the United Kingdom.svg United Kingdom 57 Sunk
21 February 1917 Alice File:Flag of Norway.svg Norway 709 Sunk
25 February 1917 Maria Adriana File:Flag of the Netherlands.svg Netherlands 88 Sunk
26 February 1917 Tammerfors File:Flag of Russia.svg Russian Empire 994 Sunk
28 February 1917 Immaculee Conception File:Flag of France.svg France 36 Sunk
25 March 1917 Etoile De La Mer File:Flag of France.svg France 43 Sunk
25 March 1917 Felix Faure File:Flag of France.svg France 37 Sunk
25 March 1917 Louise File:Flag of France.svg France 45 Sunk
25 March 1917 Marie Louise File:Flag of France.svg France 34 Sunk
25 March 1917 Saint Joseph File:Flag of France.svg France 35 Sunk
29 March 1917 Conoid File:Civil Ensign of the United Kingdom.svg United Kingdom 165 Sunk
29 March 1917 Irma File:Flag of France.svg France 32 Sunk
30 March 1917 Somme File:Civil Ensign of the United Kingdom.svg United Kingdom 1,828 Sunk
15 April 1917 Möhlenpris File:Flag of Norway.svg Norway 638 Sunk
16 April 1917 Cairndhu File:Civil Ensign of the United Kingdom.svg United Kingdom 4,109 Sunk
16 April 1917 Victoria File:Civil Ensign of the United Kingdom.svg United Kingdom 165 Sunk
17 April 1917 HMHS Lanfranc File:Naval ensign of the United Kingdom.svg Royal Navy 6,287 Sunk
19 April 1917 Limeleaf File:Civil Ensign of the United Kingdom.svg United Kingdom 7,339 Damaged
3 May 1917 Clodmoor File:Civil Ensign of the United Kingdom.svg United Kingdom 3,753 Sunk
15 May 1917 Cuba File:Civil Ensign of the United Kingdom.svg United Kingdom 271 Sunk
16 May 1917 Highland Corrie File:Civil Ensign of the United Kingdom.svg United Kingdom 7,583 Sunk
16 May 1917 Pagenturm File:Civil Ensign of the United Kingdom.svg United Kingdom 5,000 Sunk
17 May 1917 Florence Louisa File:Civil Ensign of the United Kingdom.svg United Kingdom 115 Sunk
20 May 1917 Porthkerry File:Civil Ensign of the United Kingdom.svg United Kingdom 1,920 Sunk
20 May 1917 Tycho File:Civil Ensign of the United Kingdom.svg United Kingdom 3,216 Sunk
21 May 1917 Jupiter File:Civil Ensign of the United Kingdom.svg United Kingdom 2,124 Sunk
7 June 1917 Mahopac File:Civil Ensign of the United Kingdom.svg United Kingdom 3,216 Damaged
7 June 1917 Oldfield Grange File:Civil Ensign of the United Kingdom.svg United Kingdom 4,653 Damaged
8 June 1917 Phantom File:Civil Ensign of the United Kingdom.svg United Kingdom 251 Sunk
9 June 1917 Eugene Mathilde File:Flag of France.svg France 15 Sunk
9 June 1917 Francois Georgette File:Flag of France.svg France 7 Sunk
10 June 1917 Henri Jeanne File:Flag of France.svg France 9 Sunk
10 June 1917 Madeleine File:Flag of France.svg France 7 Sunk
11 June 1917 Eustace File:Civil Ensign of the United Kingdom.svg United Kingdom 3,995 Damaged
11 June 1917 Huntsholm File:Civil Ensign of the United Kingdom.svg United Kingdom 2,073 Sunk
11 June 1917 Margarita File:Civil Ensign of the United Kingdom.svg United Kingdom 2,788 Damaged
12 June 1917 Alfred File:Civil Ensign of the United Kingdom.svg United Kingdom 130 Sunk
27 June 1917 Solway Prince File:Civil Ensign of the United Kingdom.svg United Kingdom 317 Sunk
28 June 1917 Marguerite File:Flag of France.svg France 1,544 Sunk
28 June 1917 Northfield File:Civil Ensign of the United Kingdom.svg United Kingdom 2,099 Damaged
30 June 1917 Borgund I File:Flag of Norway.svg Norway 764 Sunk
30 June 1917 Chateau Yquem File:Flag of France.svg France 1,913 Sunk
15 July 1917 Dinorwic File:Civil Ensign of the United Kingdom.svg United Kingdom 124 Sunk
15 July 1917 Ebenezer File:Civil Ensign of the United Kingdom.svg United Kingdom 177 Sunk
20 July 1917 L. H. Carl File:Civil Ensign of the United Kingdom.svg United Kingdom 1,916 Sunk
20 July 1917 Salsette File:Civil Ensign of the United Kingdom.svg United Kingdom 5,842 Sunk
22 July 1917 Rota File:Civil Ensign of the United Kingdom.svg United Kingdom 2,171 Sunk
12 August 1917 Marie Alfred File:Flag of France.svg France 159 Sunk
12 August 1917 Pauline Louisa File:Flag of France.svg France 172 Sunk
14 August 1917 Tuddal File:Flag of Norway.svg Norway 3,511 Sunk
15 August 1917 Brodstone File:Civil Ensign of the United Kingdom.svg United Kingdom 4,927 Sunk
16 August 1917 Eastgate File:Civil Ensign of the United Kingdom.svg United Kingdom 4,277 Damaged
19 August 1917 Glocliffe File:Civil Ensign of the United Kingdom.svg United Kingdom 2,211 Sunk
21 September 1917 Radaas File:Flag of Denmark.svg Denmark 2,524 Sunk
22 September 1917 Greleen File:Civil Ensign of the United Kingdom.svg United Kingdom 2,286 Sunk
23 September 1917 Rosehill File:Civil Ensign of the United Kingdom.svg United Kingdom 2,788 Sunk
25 September 1917 City of Swansea File:Civil Ensign of the United Kingdom.svg United Kingdom 1,375 Sunk
19 October 1917 Wellington File:Civil Ensign of the United Kingdom.svg United Kingdom 5,600 Damaged
24 October 1917 Gallia File:Flag of Italy (1861-1946) crowned.svg Kingdom of Italy 2,728 Sunk
25 October 1917 Gefion File:Civil Ensign of the United Kingdom.svg United Kingdom 1,123 Sunk
28 October 1917 Redesmere File:Civil Ensign of the United Kingdom.svg United Kingdom 2,123 Sunk
17 November 1917 Abaris File:Civil Ensign of the United Kingdom.svg United Kingdom 2,892 Damaged
17 November 1917 Western Coast File:Civil Ensign of the United Kingdom.svg United Kingdom 1,394 Sunk
19 November 1917 Aparima File:Civil Ensign of the United Kingdom.svg United Kingdom 5,704 Sunk
9 December 1917 Sedbergh File:Civil Ensign of the United Kingdom.svg United Kingdom 4,275 Damaged
27 January 1918 Carolus File:Flag of Norway.svg Norway 1,041 Sunk
29 January 1918 Butetown File:Civil Ensign of the United Kingdom.svg United Kingdom 1,829 Sunk
20 February 1918 Huntsmoor File:Civil Ensign of the United Kingdom.svg United Kingdom 4,957 Sunk
25 February 1918 Nyanza File:Civil Ensign of the United Kingdom.svg United Kingdom 6,695 Damaged
16 March 1918 Author File:Civil Ensign of the United Kingdom.svg United Kingdom 5,586 Damaged
21 March 1918 Ikeda File:Civil Ensign of the United Kingdom.svg United Kingdom 6,311 Sunk
18 April 1918 Pentyrch File:Civil Ensign of the United Kingdom.svg United Kingdom 3,312 Sunk
26 May 1918 Dayspring File:Civil Ensign of the United Kingdom.svg United Kingdom 57 Sunk
26 May 1918 Eclipse File:Civil Ensign of the United Kingdom.svg United Kingdom 47 Sunk
26 May 1918 Fortuna File:Civil Ensign of the United Kingdom.svg United Kingdom 61 Sunk
31 May 1918 Alert File:Civil Ensign of the United Kingdom.svg United Kingdom 59 Sunk
3 June 1918 Antiope File:Civil Ensign of the United Kingdom.svg United Kingdom 3,004 Damaged
6 June 1918 Active File:Civil Ensign of the United Kingdom.svg United Kingdom 57 Sunk
6 June 1918 Beryl File:Civil Ensign of the United Kingdom.svg United Kingdom 57 Sunk
6 June 1918 Dianthus File:Civil Ensign of the United Kingdom.svg United Kingdom 51 Sunk
29 June 1918 Grekland File:Flag of Sweden.svg Sweden 2,751 Sunk
29 June 1918 Florentia File:Civil Ensign of the United Kingdom.svg United Kingdom 3,688 Sunk
1 July 1918 Charing Cross File:Civil Ensign of the United Kingdom.svg United Kingdom 2,534 Sunk
2 July 1918 Admiral File:Civil Ensign of the United Kingdom.svg United Kingdom 102 Sunk
2 July 1918 Madeleine File:Flag of France.svg France 158 Damaged
2 July 1918 Nord File:Flag of France.svg France 409 Sunk
7 July 1918 Aby File:Civil Ensign of the United Kingdom.svg United Kingdom 15 Sunk
7 July 1918 Albion File:Civil Ensign of the United Kingdom.svg United Kingdom 22 Sunk
7 July 1918 Leeds File:Civil Ensign of the United Kingdom.svg United Kingdom 161 Damaged
26 July 1918 Boy Jack File:Civil Ensign of the United Kingdom.svg United Kingdom 57 Sunk
26 July 1918 Godesgenage File:Flag of Belgium (civil).svg Belgium 40 Sunk
27 July 1918 Counsellor File:Civil Ensign of the United Kingdom.svg United Kingdom 56 Sunk
27 July 1918 Fear Not File:Civil Ensign of the United Kingdom.svg United Kingdom 59 Sunk
27 July 1918 I’ll Try File:Civil Ensign of the United Kingdom.svg United Kingdom 51 Sunk
27 July 1918 Kirkham Abbey File:Civil Ensign of the United Kingdom.svg United Kingdom 1,166 Sunk
27 July 1918 Le Bijou File:Civil Ensign of the United Kingdom.svg United Kingdom 46 Sunk
27 July 1918 Paragon File:Civil Ensign of the United Kingdom.svg United Kingdom 56 Sunk
27 July 1918 Passion Flower File:Civil Ensign of the United Kingdom.svg United Kingdom 46 Sunk
27 July 1918 Success File:Civil Ensign of the United Kingdom.svg United Kingdom 54 Sunk
27 July 1918 Valour File:Civil Ensign of the United Kingdom.svg United Kingdom 39 Sunk
28 July 1918 Francis Robert File:Civil Ensign of the United Kingdom.svg United Kingdom 44 Sunk

References

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Notes

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  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.
  2. ^ "SM" stands for "Seiner Majestät" (English: His Majesty's) and combined with the U for Unterseeboot would be translated as His Majesty's Submarine.
  3. ^ Tonnages are in gross register tons

Citations

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  1. ^ a b Rössler 1979, p. 64.
  2. ^ a b c d e f Gröner 1991, pp. 23–25.
  3. ^ a b c Rössler 1979, p. 65.
  4. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
  5. ^ UB-40 (+1918) WreckSite
  6. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).

Bibliography

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