SM UB-9

For other ships with the same name, see German submarine U-9.
History
German Empire
NameUB-9
Ordered15 October 1914[1]
BuilderAG Weser, Bremen[2]
Yard number218[1]
Laid down6 November 1914[1]
Launched6 February 1915[1]
Commissioned18 February 1915[1]
Stricken19 February 1919[1]
FateBroken up in 1919[1]
General characteristics [3]
Class and typeType UB I submarine
Displacement
  • 127 t (125 long tons) surfaced
  • 141 t (139 long tons) submerged
Length27.88 m (91 ft 6 in) (o/a)
Beam3.15 m (10 ft 4 in)
Draft3.03 m (9 ft 11 in)
Propulsion
Speed
  • 7.45 knots (13.80 km/h; 8.57 mph) surfaced
  • 6.24 knots (11.56 km/h; 7.18 mph) submerged
Range
  • 1,500 nmi (2,800 km; 1,700 mi) at 5 knots (9.3 km/h; 5.8 mph) surfaced
  • 45 nmi (83 km; 52 mi) at 4 knots (7.4 km/h; 4.6 mph)
Test depth50 metres (160 ft)
Complement14
Armament
Notes33-second diving time
Service record
Commanders:
Operations: No patrols[1]
Victories: None[1]

SM UB-9 was a German Type UB I submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. UB-9 was ordered in October 1914 and was laid down at the AG Weser shipyard in Bremen in November. UB-9 was a little under 28 metres (92 ft) in length and displaced between 127 and 141 tonnes (125 and 139 long tons), depending on whether surfaced or submerged. She carried two torpedoes for her two bow torpedo tubes and was also armed with a deck-mounted machine gun. She was launched and commissioned as SM UB-9 in February 1915.[Note 1]

UB-9's commanding officer at commissioning only remained in charge of the ship for a week. Sources do not report any more commanding officers assigned through the end of the war, so it's not clear if the submarine remained in commission. UB-9 was reported in use as a training vessel at Kiel in September 1915. The U-boat made no war patrols and sank no ships during the war, which may indicate that the vessel remained in a training role. At the end of the war, UB-9 was deemed unseaworthy and unable to surrender at Harwich with the rest of Germany's U-boat fleet. She remained in Germany where she was broken up by Dräger at Lübeck in 1919.

  1. ^ a b c d e f g h i j Helgason, Guðmundur. "WWI U-boats: UB 9". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 19 February 2009.
  2. ^ Tarrant, p. 172.
  3. ^ Gröner 1991, pp. 22–23.


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