SM U-91

For other ships of the same name, see German submarine U-91.
Career (German Empire)
Name: U-91
Ordered: 23 June 1915
Builder: Kaiserliche Werft Danzig
Yard number: Werk 35
Laid down: 1 August 1916
Launched: 14 April 1917
Commissioned: 17 September 1917
Fate: Surrendered 26 November 1918
General characteristics
Class and type:German Type U 87 submarine
Displacement:808 tons surfaced
946 tons submerged
1160 tons (total)
Length:70.60 m (overall)
55.55 m (pressure hull)
Beam:6.30 m (overall)
4.15 m (pressure hull)
Draught:4.02 m
Propulsion:2400 hp surfaced
1200 hp submerged
Speed:16.8 knots surfaced
9.1 knots submerged
Range:11,220 miles surfaced 56 miles submerged
Complement:39 men
Armament:16 torpedoes (4/2 in bow/stern tubes)
105mm deck gun with 220 rounds
88mm deck gun
Service record
Part of: Imperial German Navy:
III Flotilla
13 Dec 1917 - 11 Nov 1918
Commanders: Kptlt Alfred von Glasenapp[1]
17 Sep 1917 - 11 Nov 1918
Operations: 8 patrols
Victories: 37 merchant ships sunk (87,119 gross register tons (GRT))
2 ships damaged (11,821 GRT)

SM U-91 was one of the 329 submarines serving in the Imperial German Navy in World War I. U-91 was engaged in the naval warfare and took part in the First Battle of the Atlantic.[2]

Summary of Raiding Career

Date Name Nationality Tonnage
(GRT)		 Fate[3]
24 December 1917 Elmleaf  United Kingdom 5,948 Damaged
28 December 1917 Robert Eggleton  United Kingdom 2,274 Sunk
2 January 1918 Boston City  United Kingdom 2,711 Sunk
4 January 1918 Otto  United Kingdom 139 Sunk
5 January 1918 Knightsgarth  United Kingdom 2,889 Sunk
7 January 1918 Premier  United Kingdom 89 Sunk
19 February 1918 Beacon Light  United Kingdom 2,768 Sunk
22 February 1918 Haileybury  United Kingdom 2,888 Sunk
23 February 1918 Birchleaf  United Kingdom 5,873 Damaged
23 February 1918 British Viscount  United Kingdom 3,287 Sunk
24 February 1918 Renfrew  United Kingdom 3,830 Sunk
2 March 1918 Bessy  United Kingdom 60 Sunk
20 April 1918 Florrieston  United Kingdom 3,366 Sunk
20 April 1918 Lowther Range  United Kingdom 3,926 Sunk
21 April 1918 Landonia  United Kingdom 2,504 Sunk
21 April 1918 Normandiet  United Kingdom 1,843 Sunk
22 April 1918 Baron Herries  United Kingdom 1,610 Sunk
26 April 1918 Ethel  United Kingdom 100 Sunk
27 April 1918 Gresham  United Kingdom 3,774 Sunk
27 April 1918 Walpas  Russian Empire 312 Sunk
28 April 1918 Damao  Portugal 5,668 Sunk
28 April 1918 Oronsa  United Kingdom 8,075 Sunk
1 July 1918 Westmoor  United Kingdom 4,329 Sunk
6 July 1918 Port Hardy  United Kingdom 6,533 Sunk
9 July 1918 Silvia  Kingdom of Italy 3,571 Sunk
13 July 1918 Badagri  United Kingdom 2,956 Sunk
16 July 1918 Fisherman  United Kingdom 136 Sunk
25 July 1918 Tippecanoe  United States 6,187 Sunk
1 October 1918 Therese et Marthe  France 32 Sunk
2 October 1918 Maia  France 185 Sunk
2 October 1918 Marie Emmanuel  France 32 Sunk
2 October 1918 Ave Maris Stella  France 22 Sunk
4 October 1918 Mercedes  Spain 2,164 Sunk
5 October 1918 Heathpark  United Kingdom 2,205 Sunk
5 October 1918 Erindring  United Kingdom 1,229 Sunk
8 October 1918 Cazengo  Portugal 3,009 Sunk
9 October 1918 Pierre  France 354 Sunk
11 October 1918 Luksefjell  Norway 2,007 Sunk
14 October 1918 Bayard  France 55 Sunk

References

  1. ↑ "Alfred von Glasenapp (Royal House Order of Hohenzollern)". uboat.net. Retrieved 21 January 2015.
  2. ↑ "U-91". Retrieved 25 January 2010.
  3. ↑ "SM U-91 successes". UBoat.net. Retrieved 21 January 2015.