SM U-101

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History
German Empire
NameU-101
Ordered15 September 1915
BuilderAG Weser, Bremen
Yard number252
Laid down30 November 1915
Launched1 April 1917
Commissioned15 May 1917
FateSurrendered 21 November 1918
General characteristics [1]
Class and typeGerman Type U 57 submarine
Displacement
  • 750 t (740 long tons) surfaced
  • 952 t (937 long tons) submerged
Length
Beam
  • 6.32 m (20 ft 9 in) (o/a)
  • 4.05 m (13 ft 3 in) (pressure hull)
Height8.25 m (27 ft 1 in)
Draught3.65 m (12 ft)
Installed power
  • 2 × 2,400 PS (1,765 kW; 2,367 shp) surfaced
  • 2 × 1,200 PS (883 kW; 1,184 shp) submerged
Propulsion2 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 depth50 m (164 ft 1 in)
Complement4 officers, 32 enlisted
Armament
Service record
Part of:
  • II Flotilla
  • 10 July 1917 – 11 November 1918
Commanders:
  • Kptlt. Karl Koopmann[2]
  • 15 May 1917 – 19 December 1917
  • Kptlt. Carl-Siegfried Ritter von Georg[3]
  • 20 December 1917 – 17 June 1918
  • Kptlt. Friedrich Ulrich[4]
  • 18 June 1918 – 11 November 1918
Operations: 8 patrols
Victories:
  • 22 merchant ships sunk
    (26,045 GRT)
  • 1 auxiliary warship sunk
    (208 GRT)
  • 3 merchant ships damaged
    (11,217 GRT)

SM U-101 was one of the 329 submarines serving in the Imperial German Navy in World War I. U-101 was engaged in the German campaign against Allied commerce (Handelskrieg) during that conflict.[5] On 26 November 1917, U-101 torpedoed and damaged RFA Crenella,[6] which managed to return to port with assistance from USS Cushing.[7]

Summary of raiding history[edit]

Date Name Nationality Tonnage[Note 1] Fate[8]
6 August 1917 Rosemount  United Kingdom 3,044 Sunk
26 September 1917 Jacqueline  France 2,899 Sunk
9 October 1917 Nervier  Belgium 1,759 Sunk
26 November 1917 RFA Crenella  Royal Navy 7,035 Damaged
27 November 1917 Notre Dame De Rostrenen  France 186 Sunk
19 January 1918 St. Clair  United Kingdom 621 Damaged
1 February 1918 Kindly Light  United Kingdom 116 Sunk
2 February 1918 Marie Magdeleine  France 115 Sunk
2 February 1918 Sofie  United Kingdom 354 Sunk
3 February 1918 Nikolaos  Kingdom of Italy 3,561 Damaged
5 February 1918 Mexico City  United Kingdom 5,078 Sunk
20 March 1918 Glenford  United Kingdom 494 Sunk
22 March 1918 Trinidad  United Kingdom 2,592 Sunk
23 March 1918 Jane Gray  United Kingdom 124 Sunk
24 March 1918 John G. Walter  United Kingdom 258 Sunk
27 March 1918 Allendale  United Kingdom 2,153 Sunk
30 March 1918 Lough Fisher  United Kingdom 418 Sunk
2 April 1918 Solway Queen  United Kingdom 307 Sunk
14 May 1918 Embla  Denmark 157 Sunk
26 May 1918 Princess Royal  United Kingdom 1,986 Sunk
27 May 1918 Molière  France 1,545 Sunk
28 May 1918 Flora  France 209 Sunk
29 May 1918 Souvenir  Denmark 549 Sunk
30 May 1918 Waneta  United Kingdom 1,683 Sunk
31 May 1918 Pretty Polly  United Kingdom 19 Sunk
3 June 1918 HMT St. John’s  Royal Navy 208 Sunk

References[edit]

Notes[edit]

  1. ^ Merchant ship tonnages are in gross register tons. Military vessels are listed by tons displacement.

Citations[edit]

  1. ^ Gröner 1991, pp. 12–14.
  2. ^ Helgason, Guðmundur. "WWI U-boat commanders: Karl Koopmann". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 25 January 2015.
  3. ^ Helgason, Guðmundur. "WWI U-boat commanders: Carl-Siegfried Ritter von Georg (Pour le Mérite)". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 25 January 2015.
  4. ^ Helgason, Guðmundur. "WWI U-boat commanders: Friedrich Ulrich". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 25 January 2015.
  5. ^ Helgason, Guðmundur. "WWI U-boats: U 101". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 25 January 2010.
  6. ^ "RFA Crenella". Royal Fleet Auxiliary Historical Society. Retrieved 30 March 2010.
  7. ^ "Cushing II DD-55". History Central. Retrieved 30 March 2010.
  8. ^ Helgason, Guðmundur. "Ships hit by U 101". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 25 January 2015.

Bibliography[edit]

  • 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.