SM U-28 (Germany)

For other ships with the same name, see German submarine U-28.
A submarine on the surface in the middle distance on the right. Nearer to the camera, on the left, is a small steam vessel.
SM U-28 seen from Batavier V, a ship she captured as a prize in March 1915.
History
German Empire
NameU-28
Ordered19 February 1912
BuilderKaiserliche Werft, Danzig
Yard number18
Launched30 August 1913
Commissioned26 June 1914
FateSunk 2 September 1917. 39 dead.
General characteristics [1]
Class and typeGerman Type U 27 submarine
Displacement
  • 675 t (664 long tons) surfaced
  • 878 t (864 long tons) submerged
Length64.70 m (212 ft 3 in) (o/a)
Beam6.32 m (20 ft 9 in)
Draught3.48 m (11 ft 5 in)
Speed
  • 16.7 knots (30.9 km/h; 19.2 mph) surfaced
  • 9.8 knots (18.1 km/h; 11.3 mph) submerged
Range
  • 8,420 nmi (15,590 km; 9,690 mi) at 8 knots (15 km/h; 9.2 mph) surfaced
  • 85 nmi (157 km; 98 mi) at 5 knots (9.3 km/h; 5.8 mph) submerged
Test depth50 m (164 ft)
Complement4 officers, 31 enlisted
Armament
Service record
Part of:
  • IV Flotilla
  • 1 August 1914 - Unknown end
  • Training Flotilla
  • Unknown start – 10 May 1917
  • IV Flotilla
  • 10 May – 2 September 1917
Commanders:
  • Kptlt. Freiherr Georg-Günther von Forstner[2]
  • 1 August 1914 – 14 June 1916
  • Kptlt. Otto Rohrbeck[3]
  • 15 June – 4 August 1916
  • Kptlt. Freiherr von Loë-Degenhart[4]
  • 5 August 1916 – 14 January 1917
  • Kptlt. Georg Schmidt[5]
  • 15 January – 2 September 1917[6]
Operations: 5 patrols
Victories:
  • 39 merchant ships sunk
    (89,632 GRT)
  • 1 auxiliary warship sunk
    (494 GRT)
  • 3 merchant ships damaged
    (14,976 GRT)
  • 2 merchant ships taken as prize
    (3,226 GRT)
SM U-28 sinking the SS Falaba

SM U-28[a] was a Type U 27 U-boat that served in the First World War. It conducted 5 patrols, sinking 40 ships totalling 90,126 GRT.

  1. ^ Gröner 1991, pp. 6–7.
  2. ^ Helgason, Guðmundur. "WWI U-boat commanders: Freiherr Georg-Günther von Forstner (Friedrich-August Cross (Oldenburg))". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 22 December 2014.
  3. ^ Helgason, Guðmundur. "WWI U-boat commanders: Otto Rohrbeck". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 22 December 2014.
  4. ^ Helgason, Guðmundur. "WWI U-boat commanders: Freiherr von Loë-Degenhart". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 22 December 2014.
  5. ^ Helgason, Guðmundur. "WWI U-boat commanders: Georg Schmidt". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 22 December 2014.
  6. ^ Helgason, Guðmundur. "WWI U-boats: U 28". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net.


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