SM U-28 (Austria-Hungary)

History
Austria-Hungary
NameSM U-28
Ordered12 October 1915[1]
BuilderCantiere Navale Triestino, Pola
Launched8 January 1917[2]
Commissioned26 June 1917[3]
FateScrapped 1920
Service record
Commanders:
  • Zdenko Hudeček
  • 26 June 1917 – 31 October 1918[3]
  • Franz Rzemenowsky von Trautenegg
  • 2 July – 31 October 1918
Victories:
  • 9 merchant ships sunk
    (41,060 GRT)[3]
  • 1 auxiliary warship sunk
    (3,683 GRT)
  • 1 merchant ship damaged
    (5,592 GRT)
General characteristics
TypeU-27-class submarine
Displacement
  • 264 t (260 long tons) surfaced
  • 301 t (296 long tons) submerged[2]
Length121 ft 1 in (36.91 m)[2]
Beam14 ft 4 in (4.37 m)[2]
Draft12 ft 2 in (3.71 m)[2]
Propulsion
Speed
  • 9 knots (17 km/h; 10 mph) surfaced
  • 7.5 knots (14 km/h; 9 mph) submerged[2]
Complement23–24[2]
Armament

SM U-28 or U-XXVIII was a U-27-class U-boat or submarine for the Austro-Hungarian Navy. U-28, built by the Austrian firm of Cantiere Navale Triestino (CNT) at the Pola Navy Yard, was launched in January 1917 and commissioned in June.

She had a single hull and was just over 121 feet (37 m) in length. She displaced nearly 265 metric tons (261 long tons) when surfaced and over 300 metric tons (295 long tons) when submerged. Her two diesel engines moved her at up to 9 knots (17 km/h; 10 mph) on the surface, while her twin electric motors propelled her at up to 7.5 knots (13.9 km/h; 8.6 mph) while underwater. She was armed with two bow torpedo tubes and could carry a load of up to four torpedoes. She was also equipped with a 75-millimetre (3.0 in) deck gun and a machine gun.

During her service career, U-28 sank the British Q-ship HMS Bradford City and nine other ships, sending a combined tonnage of 44,743 to the bottom. U-28 was surrendered at Venice in 1919, granted to Italy as a war reparation and broken up the following year.

  1. ^ Miller, p. 20.
  2. ^ a b c d e f g h i Cite error: The named reference Con-344 was invoked but never defined (see the help page).
  3. ^ a b c Helgason, Guðmundur. "WWI U-boats: KUK U14". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 20 January 2009.