SM U-103 - Misplaced Pages

(Redirected from Unterseeboot 103 (1917)) Imperial German submarine sunk by HMT Olympic in 1918 For other ships with the same name, see German submarine U-103.

History

German Empire
Name	U-103
Ordered	15 September 1915
Builder	AG Weser, Bremen
Yard number	254
Laid down	8 August 1916
Launched	9 June 1917
Commissioned	15 July 1917
Fate	Rammed and sunk 12 May 1918 by HMT Olympic. 9 crewmen killed, 31 survived.
General characteristics
Class and type	German Type U 57 submarine
Displacement	750 t (740 long tons) surfaced 952 t (937 long tons) submerged
Length	67.60 m (221 ft 9 in) (o/a) 54.02 m (177 ft 3 in) (pressure hull)
Beam	6.32 m (20 ft 9 in) (o/a) 4.05 m (13 ft 3 in) (pressure hull)
Height	8.25 m (27 ft 1 in)
Draught	3.65 m (12 ft 0 in)
Installed power	2 × 2,400 PS (1,765 kW; 2,367 shp) surfaced 2 × 1,200 PS (883 kW; 1,184 shp) submerged
Propulsion	2 shafts, 2 × 1.65 m (5 ft 5 in) propellers
Speed	16.5 knots (30.6 km/h; 19.0 mph) surfaced 8.8 knots (16.3 km/h; 10.1 mph) submerged
Range	10,100 nmi (18,700 km; 11,600 mi) at 8 knots (15 km/h; 9.2 mph) surfaced 56 nmi (104 km; 64 mi) at 5 knots (9.3 km/h; 5.8 mph) submerged
Test depth	50 m (164 ft 1 in)
Complement	4 officers, 32 enlisted
Armament	4 × 50 cm (19.7 in) torpedo tubes (two bow, two stern) 10–12 torpedoes 2 × 8.8 cm (3.5 in) SK L/30 deck gun
Service record
Part of:	II Flotilla 26 August 1917 – 12 May 1918
Commanders:	Kptlt. Claus Rücker 26 August 1917 – 12 May 1918
Operations:	5 patrols
Victories:	8 merchant ships sunk (15,467 GRT) 1 merchant ship damaged (6,042 GRT)

SM U-103 was an Imperial German Navy Type U 57 U-boat that was rammed and sunk by HMT Olympic during the First World War. U-103 was built by AG Weser in Bremen, launched on 9 June 1917 and commissioned 15 July 1917. She completed five tours of duty under Kptlt. Claus Rücker and sank eight ships totalling 15,467 gross register tons (GRT) before being lost in the English Channel on 12 May 1918.

Sinking

In the early hours of 12 May 1918, the surfaced U-103 sighted Olympic, the older sister of RMS Titanic, which was carrying US troops to France. The crew prepared to launch torpedoes from her stern torpedo tubes but was unable to flood them in time before the submarine was spotted by Olympic, whose gunners opened fire as the transport ship turned to ram.

SM U-103 started to crash dive to 30 m (98 ft) in an attempt to turn to a parallel course to the liner. But there was not enough time before the port propeller of Olympic sliced through the submarine's pressure hull just aft of its conning tower. The crew of U-103 blew ballast tanks before scuttling their sinking submarine. Nine crewmen lost their lives. Olympic did not stop to pick up the survivors but continued on to Cherbourg. USS Davis later sighted a distress flare and took 35 survivors to Queenstown.

Wreck

The remains of U-103 lie at a depth of 90 m (300 ft) in the English Channel about midway between England and France (49°16′N 4°51′W / 49.267°N 4.850°W / 49.267; -4.850 (Location of the wreck of U-103)). Its deep location makes it largely inaccessible to divers but the wreck was surveyed and identified by a remotely operated underwater vehicle in 2012.

Summary of raiding history

Date	Name	Nationality	Tonnage	Fate
12 September 1917	St. Margaret	United Kingdom	943	Sunk
12 November 1917	Depute Pierre Goujon	France	4,121	Sunk
16 November 1917	Garron Head	United Kingdom	1,933	Sunk
26 January 1918	Cork	United Kingdom	1,232	Sunk
29 January 1918	Glenfruin	United Kingdom	3,097	Sunk
17 March 1918	Cressida	United Kingdom	150	Sunk
17 March 1918	Sea Gull	United Kingdom	976	Sunk
18 March 1918	Grainton	United Kingdom	6,042	Damaged
20 March 1918	Kassanga	United Kingdom	3,015	Sunk

References

Notes

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

Citations

Gröner 1991, pp. 12–14.
Helgason, Guðmundur. "WWI U-boat commanders: Claus Rücker (Royal House Order of Hohenzollern)". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 26 January 2015.
Helgason, Guðmundur. "WWI U-boats: U 103". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 25 January 2010.
McCartney, Innes; Jak Mallmann-Showell (2002). Lost Patrols: Submarine Wrecks of the English Channel. Periscope Publishing Ltd. p. 36. ISBN 1-904381-04-9.
Kemp, Paul (1997). U-Boats Destroyed (German submarine losses in the World Wars). London: Arms and Armour Press. p. 49. ISBN 1-85409-321-5.
"SM U-103". www.forgottenwrecks.maritimearchaeologytrust.org. Archived from the original on 25 May 2021. Retrieved 25 May 2021.
Helgason, Guðmundur. "Ships hit by U 103". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 26 January 2015.

Bibliography

Gröner, Erich; Jung, Dieter; Maass, Martin (1991). U-boats and Mine Warfare Vessels. German Warships 1815–1945. Vol. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN 0-85177-593-4.

German Type U 57 submarine
SM U-57 SM U-58 SM U-59 SM U-60 SM U-61 SM U-62 SM U-99 SM U-100 SM U-101 SM U-102 SM U-103 SM U-104
Preceded by: Type U 51 Followed by: Type U 63 List of U-boats of Germany

German Type U 57 submarine

Preceded by: Type U 51
Followed by: Type U 63

List of U-boats of Germany

v t e Shipwrecks and maritime incidents in May 1918
Shipwrecks	2 May: UB-31, Unity 5 May: Kyarra, UB-119 8 May: U-32 9 May: UC-78 10 May: UB-16, HMS Vindictive 11 May: Sant Anna, U-154, Verona 12 May: U-103, UB-72 13 May: UB-114, Zaanland 14 May: HMS Phoenix 17 May: U-35 18 May: Catapulte, Warrimoo, HMS Chesterfield 21 May: Rosalind 22 May: USS Wakiva II 23 May: Innisfallen, HMS Moldavia, UB-52 26 May: UB-74 31 May: HMS Fairy, USS President Lincoln, UC-75 Unknown date: UB-70
Other incidents	1 May: Prince Rupert 13 May: USS Hisko, USS Mexican, Nidd 22 May: USS Wabash 29 May: RMS Magdalena
1917 1918 1919 April 1918 June 1918

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