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Submarine U21 (Sunk HMS Majestic and Triumph)

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Mal Murray View Drop Down
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    Posted: 04 Feb 2011 at 12:09
The following information was extracted from the UBoat.net site.  It should be read in conjunction with the Wikipedia Article shown below it.
It should be noted that the hypertext links in this article open in a new window but to sites outside the Gallipoli Association Forum)
 
 

Type U 19

Ocean-going diesel-powered torpedo attack boats class


4 boats commissioned

Construction history of type U 19

 
U-boats # Shipyard Werk # Built during
U 19 - U 22 4Kaiserliche Werft, Danzig 13 - 16 1910 - 1913

All U-boats of type U 19

Below are the 4 commissioned U-boats of this type.

U 19, U 20, U 21, and U 22.

Technical information for type U 19

Displacement:
(tons)
650 (sf)
837 (sm)
(total)
Length: (m) 64,15 oa
50,50 ph
Beam: (m) 6,10 oa
4,05 ph
Draught: (draft) 3,58 m
Height: 8,10 m
Power: (hp) 1700 (sf)
1200 (sm)
Speed:
(knots)
15,4 (sf)
9,5 (sm)
Range:
(miles / knots)
7600/8 (sf)
80/5 (sm)
Torpedoes: 6
2/2 (bow / stern tubes)
Mines: No mines carried
Deck gun: 105mm
300 rounds
Crew: 35 men
Max depth: ca. 50 m
(164 feet)
sm = submerged, sf = surfaced, ph = pressure hull,
oa = overall, hp = horsepower.
 
 

Type

U 19

Shipyard Kaiserliche Werft, Danzig  (Werk 15)
Ordered 25 Nov 1910  Laid down 27 Oct 1911 
Launched 8 Feb 1913  Commissioned 22 Oct 1913 
Commanders
1 Aug 1914 - 31 Aug 1918   Otto Hersing
1 Sep 1918 - 11 Nov 1918   Friedrich Klein
Career 11 patrols
start date unknown - 4 Mar 1917 Pola Flotilla
1 Aug 1914 - 5 Jun 1915 III Flotilla
5 Jun 1915 - end date unknown Constantinople Flotilla
4 Mar 1917 - 11 Nov 1918 III Flotilla
Successes 36 ships sunk for a total of 79,005 tons.
2 ships damaged for a total of 8,918 tons.
4 warships sunk for a total of 34,575 tons. 
Fate 22 Feb 1919 - Sunk in an accident in position 54.19N, 03.42W while on passage to surrender..  
 
The following list shows the vessels which were sunk by the U-21.
 

Ships hit by U 21

See the profile page for U 21

Date U-boat  Commander  Name of ship Tons Nat.
 
5 Sep 1914  U 21  Otto Hersing  Pathfinder (hms) 2,940 br
23 Nov 1914  U 21  Otto Hersing  Malachite 718 br
26 Nov 1914  U 21  Otto Hersing  Primo 1,366 br
 
30 Jan 1915  U 21  Otto Hersing  Ben Cruachan 3,092 br
30 Jan 1915  U 21  Otto Hersing  Kilcoan 456 br
30 Jan 1915  U 21  Otto Hersing  Linda Blanche 369 br
25 May 1915  U 21  Otto Hersing  Triumph (hms) 11,985 br
27 May 1915  U 21  Otto Hersing  Majestic (hms) 14,900 br
4 Jul 1915  U 21  Otto Hersing  Carthage 5,601 fr
 
1 Feb 1916  U 21  Otto Hersing  Belle Of France 3,876 br
8 Feb 1916  U 21  Otto Hersing  Admiral Charner 4,750 fr
30 Apr 1916  U 21  Otto Hersing  City Of Lucknow 3,669 br
26 Oct 1916  U 21  Otto Hersing  Marina G. 154 it
28 Oct 1916  U 21  Otto Hersing  Gilda R. 37 it
28 Oct 1916  U 21  Otto Hersing  Tre Fratelli D. 190 it
31 Oct 1916  U 21  Otto Hersing  Glenlogan 5,838 br
1 Nov 1916  U 21  Otto Hersing  Bernardo Canale 1,346 it
1 Nov 1916  U 21  Otto Hersing  Torero 767 it
2 Nov 1916  U 21  Otto Hersing  San Antonio O. 113 it
3 Nov 1916  U 21  Otto Hersing  San Giorgio 258 it
23 Dec 1916  U 21  Otto Hersing  Benalder (d.) 3,044 br
 
16 Feb 1917  U 21  Otto Hersing  Mayola 146 br
16 Feb 1917  U 21  Otto Hersing  Rose Dorothea 147 br
17 Feb 1917  U 21  Otto Hersing  Emilia I 25 pt
17 Feb 1917  U 21  Otto Hersing  Lima 108 pt
20 Feb 1917  U 21  Otto Hersing  Cacique 2,917 fr
22 Feb 1917  U 21  Otto Hersing  Bandoeng 5,851 nl
22 Feb 1917  U 21  Otto Hersing  Eemland 3,770 nl
22 Feb 1917  U 21  Otto Hersing  Gaasterland 3,917 nl
22 Feb 1917  U 21  Otto Hersing  Jacatra 5,373 nl
22 Feb 1917  U 21  Otto Hersing  Noorderdijk 7,166 nl
22 Feb 1917  U 21  Otto Hersing  Normanna 2,900 nw
22 Feb 1917  U 21  Otto Hersing  Zaandijk 4,189 nl
22 Feb 1917  U 21  Otto Hersing  Menado (d.) 5,874 nl
22 Apr 1917  U 21  Otto Hersing  Giskö 1,643 nw
22 Apr 1917  U 21  Otto Hersing  Theodore William 3,057 nw
29 Apr 1917  U 21  Otto Hersing  Askepot 1,793 nw
30 Apr 1917  U 21  Otto Hersing  Borrowdale 1,268 ru
3 May 1917  U 21  Otto Hersing  Lindisfarne 1,703 ru
6 May 1917  U 21  Otto Hersing  Adansi 2,644 br
8 May 1917  U 21  Otto Hersing  Killarney 1,413 br
27 Jun 1917  U 21  Otto Hersing  Baltic 1,125 sw
  122,498
40 ships sunk (113,580 tons) and 2 ships damaged (8,918 tons).


Legend
(d.) means the ship was damaged.



Edited by Mal Murray - 07 Feb 2011 at 17:45
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SM U-21 (Germany)

http://en.wikipedia.org/wiki/SM_U-21_(Germany)

Class and type: German Type U 19 submarine
General characteristics
Displacement: 650 tons surfaced, 837 tons submerged[1]
Length: 64.2 m (210.6 ft)[2]
Beam: 6.1 m (20.0 ft)[3]
Draught: 3.6 m (11.8 ft)[4]
Speed: •28.7 km/h (15.5 kn) surfaced[5]
•17.6 km/h (9.5 kn) submerged[6]
Range: 9,800 km (5,300 nmi) at 15 km/h (8.1 kn)[7]
Armament: •four 50 cm (19.7 in) torpedo tubes[8] (two bow, two stern, nine torpedoes)[9]
•1 x 88 mm (3.46 in) deck gun (two from 1916 on)[10]
Service record
Part of: Kaiserliche Marine:
I Flottille

SM U-21 was one of the most famous U-boats to serve in the Imperial German Navy in World War I. She was the first submarine to sink a ship with a self-propelled torpedo. She also sank the British battleships HMS Triumph and HMS Majestic. U-21 survived the war and sank while under tow by a British warship in 1919[11].

//

Outbreak of War

Ordered in 1911 and built by the Kaiserliche Werft at the Imperial shipyard in Danzig, U-21 was commissioned in 1913. In August 1914 at the outbreak of war, she was stationed at Heligoland, as part of the Third Half Flotilla (Second Flotilla). She was commanded by Otto Hersing, who stayed with her until the end of the war. On her third war patrol, she sighted the Royal Navy light cruiser, HMS Pathfinder off the coast of St Abbs Head in Scotland. A single torpedo hit the cruiser's hull causing a boiler explosion which in turn ignited the ship's magazine. Pathfinder sank within four minutes and only 18 of her crew of 268 survived[12]. This was the first ship to be sunk by a self-propelled torpedo - the USS Housatonic had been sunk in 1864 with a spar torpedo, a simple charge fixed to a pole.[13]. U-21 was also the first U-boat to enter the Irish Sea. On 29 January she shelled the airship sheds on Walney Island off Barrow-in-Furness, but was driven off by shore batteries[14].

HMS Majestic torpedoed by U-21

In the Mediterranean 1915-17

On 5 June 1915, U-21 was transferred to the Mediterranean Sea to support Germany's ally, Turkey. During this voyage, she evaded air attack in the Straight of Gibraltar and became the first U-boat to enter the Mediterranean and the first submarine to refuel at sea[15]. Arriving off Galipoli on 25 May, she sighted the pre-Dreadnought battleship, HMS Triumph, which was at anchor bombarding Turkish coastal artillery at Gaba Tepe. Approaching to within 300 metres, Hersing fired a single torpedo[16], which penetrated the Triumph's torpedo nets and then her hull. She began to list and capsized within 10 minutes; 73 of her crew of nearly 600 were lost[17]. Most of the British and French battleships were withdrawn, but two days later, it was felt that it would be safe for HMS Majestic to resume the bombardment, close inshore and surrounded by transport ships and torpedo nets. U-21 fired two torpedoes through a gap in the barricade and the Majestic quickly sank; 40 of her crew were lost[18]. The U-boat had been spotted by an RNAS aircraft flown by Wing Commander Samson which made several bombing runs. Hersing escaped by diving under the French battleship Henri IV; when the U-boat reappeared later, Samson had run out of bombs and could only fire his rifle at her.

U-21 retired to Constantinople. On 4 July she sank the French transport ship Carthage and then made her way into the Adriatic Sea, where she joined the Deutsche U-Flotilla Pola, based at Cattaro. On the 8th February 1916, U21 sank the French armoured cruiser Amiral Charner off the Syrian coast.

End of the War

In March 1917 she joined the High Seas Fleet in Kiel. The U-21 survived the war and still under Hersing's command, accidentally sank on 22 February 1919 in the North Sea while under tow by a British warship[19]. Some accounts maintain that she was scuttled by Hersing[20], who took up potato farming after the war. During the war, the U-21 sank a total of 40 Allied ships (113,580 tons) and damaged two further ships (8,918 tons)[21].

External Links

Notes

  1. ^ Fitzsimons, Bernard, ed. "U-Boats (1905-18)", in The Illustrated Encyclopedia of 20th Century Weapons and Warfare, "(Phoebus Publishing, 1978), Volume 23, p.2534.
  2. ^ Fitzsimons, p.2534.
  3. ^ Fitzsimons, p.2534.
  4. ^ Fitzsimons, p.2534.
  5. ^ Fitzsimons, p.2534.
  6. ^ Fitzsimons, p.2534.
  7. ^ Fitzsimons, p.2534.
  8. ^ Fitzsimons, p.2534.
  9. ^ Fitzsimons, p.2534.
  10. ^ Fitzsimons, p.2575; he mistakenly identifies it as 86mm p.2534.
  11. ^ http://ahoy.tk-jk.net/macslog/TwosuccessfulU-BoatComman.html
  12. ^ http://www.militaria.co.uk/medals.asp?noadd=true&MilID=8490JTME&CatName=British%20-%20WWI%20Medals&SubCatName=1914/15%20STAR%20-%20Singles&parentid=8147&catid=8157&PNum=&StartNum=&EndNum=
  13. ^ http://www.divernet.com/Wrecks/wrecks_general/159393/what_makes_pathfinder_so_special.html
  14. ^ http://www.naval-history.net/WW1NavyBritishBVLSaRN1501.htm
  15. ^ http://www.numa.net/expeditions/u-21_1.html
  16. ^ http://silentseawolvesmsw.devhub.com/blog/463888-u-21-sinks-hms-triumph/
  17. ^ http://www.battleships-cruisers.co.uk/hms_triumph.htm
  18. ^ http://www.historyofwar.org/articles/weapons_HMS_Majestic.html
  19. ^ http://www.uboat.net/wwi/boats/index.html?boat=21
  20. ^ http://www.numa.net/expeditions/u-21_1.html
  21. ^ http://www.uboat.net/wwi/boats/successes/u21.html
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