SM UB-40 explained

SM UB-40 was a German Type UB II submarine or U-boat in the German Imperial Navy (de|Kaiserliche Marine) during World War I.

Design

A Type UB II submarine, UB-40 had a displacement of 274t when at the surface and 303t while submerged. She had a total length of 36.9m (121.1feet), a beam of 4.37m (14.34feet), and a draught of 3.69m (12.11feet). The submarine was powered by two Körting six-cylinder diesel engines producing a total 284PS, two Siemens-Schuckert electric motors producing 280PS, and one propeller shaft. She was capable of operating at depths of up to .

The submarine had a maximum surface speed of and a maximum submerged speed of . When submerged, she could operate for at ; when surfaced, she could travel at . UB-40 was fitted with two torpedo tubes, four torpedoes, and one 8.8sp=usNaNsp=us Uk L/30 deck gun. She had a complement of twenty-one crew members and two officers and a 42-second dive time.

Construction and career

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.[1]

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.

The wreck of UB-40 has been located & identified by divers in the recent years.[2]

Summary of raiding history

DateNameNationalityTonnage[3] Fate[4]
20 October 1916Barbara United Kingdom3,740Sunk
21 October 1916Cock O’ the Walk United Kingdom111Sunk
22 October 1916Maris Stella France106Sunk
22 October 1916Risøy Norway1,129Sunk
7 November 1916Reime Norway1,913Sunk
8 November 1916Killellan United Kingdom1,971Sunk
16 November 1916Alphonse Marceline Belgium60Sunk
16 November 1916Vanguard United Kingdom142Sunk
17 November 1916Saint Rogatien France1,581Sunk
21 November 1916Alice France822Sunk
21 November 1916Palm Beach United Kingdom3,891Damaged
22 November 1916Houlgate France1,550Sunk
22 November 1916City of Mexico Norway1,511Sunk
22 November 1916Grenada United Kingdom2,268Sunk
28 December 1916Oldambt Netherlands470Captured as prize
5 February 1917Anna Prosper Belgium70Sunk
5 February 1917Emerald United Kingdom57Sunk
21 February 1917Alice Norway709Sunk
25 February 1917Maria Adriana Netherlands88Sunk
26 February 1917Tammerfors994Sunk
28 February 1917Immaculee Conception France36Sunk
25 March 1917Etoile De La Mer France43Sunk
25 March 1917Felix Faure France37Sunk
25 March 1917Louise France45Sunk
25 March 1917Marie Louise France34Sunk
25 March 1917Saint Joseph France35Sunk
29 March 1917Conoid United Kingdom165Sunk
29 March 1917Irma France32Sunk
30 March 1917Somme United Kingdom1,828Sunk
15 April 1917Möhlenpris Norway638Sunk
16 April 1917Cairndhu United Kingdom4,109Sunk
16 April 1917Victoria United Kingdom165Sunk
17 April 19176,287Sunk
19 April 1917Limeleaf United Kingdom7,339Damaged
3 May 1917Clodmoor United Kingdom3,753Sunk
15 May 1917Cuba United Kingdom271Sunk
16 May 1917Highland Corrie United Kingdom7,583Sunk
16 May 1917Pagenturm United Kingdom5,000Sunk
17 May 1917Florence Louisa United Kingdom115Sunk
20 May 1917Porthkerry United Kingdom1,920Sunk
20 May 1917Tycho United Kingdom3,216Sunk
21 May 1917Jupiter United Kingdom2,124Sunk
7 June 1917Mahopac United Kingdom3,216Damaged
7 June 1917Oldfield Grange United Kingdom4,653Damaged
8 June 1917Phantom United Kingdom251Sunk
9 June 1917Eugene Mathilde France15Sunk
9 June 1917Francois Georgette France7Sunk
10 June 1917Henri Jeanne France9Sunk
10 June 1917Madeleine France7Sunk
11 June 1917Eustace United Kingdom3,995Damaged
11 June 1917Huntsholm United Kingdom2,073Sunk
11 June 1917Margarita United Kingdom2,788Damaged
12 June 1917Alfred United Kingdom130Sunk
27 June 1917Solway Prince United Kingdom317Sunk
28 June 1917Marguerite France1,544Sunk
28 June 1917Northfield United Kingdom2,099Damaged
30 June 1917Borgund I Norway764Sunk
30 June 1917Chateau Yquem France1,913Sunk
15 July 1917Dinorwic United Kingdom124Sunk
15 July 1917Ebenezer United Kingdom177Sunk
20 July 1917L. H. Carl United Kingdom1,916Sunk
20 July 1917Salsette United Kingdom5,842Sunk
22 July 1917Rota United Kingdom2,171Sunk
12 August 1917Marie Alfred France159Sunk
12 August 1917Pauline Louisa France172Sunk
14 August 1917Tuddal Norway3,511Sunk
15 August 1917Brodstone United Kingdom4,927Sunk
16 August 1917Eastgate United Kingdom4,277Damaged
19 August 1917Glocliffe United Kingdom2,211Sunk
21 September 1917Radaas Denmark2,524Sunk
22 September 1917Greleen United Kingdom2,286Sunk
23 September 1917Rosehill United Kingdom2,788Sunk
25 September 1917City of Swansea United Kingdom1,375Sunk
19 October 1917Wellington United Kingdom5,600Damaged
24 October 1917Gallia2,728Sunk
25 October 1917Gefion United Kingdom1,123Sunk
28 October 1917Redesmere United Kingdom2,123Sunk
17 November 1917Abaris United Kingdom2,892Damaged
17 November 1917Western Coast United Kingdom1,394Sunk
19 November 1917Aparima United Kingdom5,704Sunk
9 December 1917Sedbergh United Kingdom4,275Damaged
27 January 1918Carolus Norway1,041Sunk
29 January 1918Butetown United Kingdom1,829Sunk
20 February 1918Huntsmoor United Kingdom4,957Sunk
25 February 1918Nyanza United Kingdom6,695Damaged
16 March 1918Author United Kingdom5,586Damaged
21 March 1918Ikeda United Kingdom6,311Sunk
18 April 1918Pentyrch United Kingdom3,312Sunk
26 May 1918Dayspring United Kingdom57Sunk
26 May 1918Eclipse United Kingdom47Sunk
26 May 1918Fortuna United Kingdom61Sunk
31 May 1918Alert United Kingdom59Sunk
3 June 1918Antiope United Kingdom3,004Damaged
6 June 1918Active United Kingdom57Sunk
6 June 1918Beryl United Kingdom57Sunk
6 June 1918Dianthus United Kingdom51Sunk
29 June 1918Grekland Sweden2,751Sunk
29 June 1918Florentia United Kingdom3,688Sunk
1 July 1918Charing Cross United Kingdom2,534Sunk
2 July 1918Admiral United Kingdom102Sunk
2 July 1918Madeleine France158Damaged
2 July 1918Nord France409Sunk
7 July 1918Aby United Kingdom15Sunk
7 July 1918Albion United Kingdom22Sunk
7 July 1918Leeds United Kingdom161Damaged
26 July 1918Boy Jack United Kingdom57Sunk
26 July 1918Godesgenage Belgium40Sunk
27 July 1918Counsellor United Kingdom56Sunk
27 July 1918Fear Not United Kingdom59Sunk
27 July 1918I’ll Try United Kingdom51Sunk
27 July 1918Kirkham Abbey United Kingdom1,166Sunk
27 July 1918Le Bijou United Kingdom46Sunk
27 July 1918Paragon United Kingdom56Sunk
27 July 1918Passion Flower United Kingdom46Sunk
27 July 1918Success United Kingdom54Sunk
27 July 1918Valour United Kingdom39Sunk
28 July 1918Francis Robert United Kingdom44Sunk

References

Citations

Bibliography

51.225°N 58°W

Notes and References

  1. "SM" stands for "Seiner Majestät" (en|His Majesty's) and combined with the U for Unterseeboot would be translated as His Majesty's Submarine.
  2. http://www.wrecksite.eu/wreck.aspx?487 UB-40 (+1918)
  3. Tonnages are in gross register tons
  4. ub40. UB 40. 1boat. 8 December 2014.

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