SM UB-9

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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 typeGerman Type 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

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

Dräger at Lübeck
in 1919.

Design and construction

After the

German Imperial Navy found itself without suitable submarines that could be operated in the narrow and shallow seas off Flanders.[4][5] Project 34, a design effort begun in mid-August 1914,[5] produced the Type UB I design: a small submarine that could be shipped by rail to a port of operations and quickly assembled. Constrained by railroad size limitations, the UB I design called for a boat about 28 metres (92 ft) long and displacing about 125 tonnes (123 long tons) with two torpedo tubes.[4][Note 2]

UB-9 was the first of the initial allotment of seven submarines—numbered up to

propeller shaft. Her top speeds were 7.45 knots (13.80 km/h; 8.57 mph), surfaced, and 6.24 knots (11.56 km/h; 7.18 mph), submerged.[2] At more moderate speeds, she could sail up to 1,500 nautical miles
(2,800 km; 1,700 mi) on the surface before refueling, and up to 45 nautical miles (83 km; 52 mi) submerged before recharging her batteries. Like all boats of the class, UB-9 was rated to a diving depth of 50 metres (160 ft), and could completely submerge in 33 seconds.

UB-9 was armed with two 45-centimeter (17.7 in)

launched on 6 February 1915.[1]

Career

The submarine was

commissioned into the German Imperial Navy as SM UB-9 on 18 February 1915 under the command of Oberleutnant zur See Wilhelm Werner,[1] a 26-year-old first-time U-boat commander.[8] Wenninger was only in command of UB-9 for ten days.[1]
Sources do not indicate who, if anyone, succeeded him as commander of UB-9, or if UB-9 remained in commission.

According to authors R. H. Gibson and Maurice Prendergast, UB-9 had been assigned to the Kiel Periscope School by September 1915.[9] Uboat.net reports that UB-9' undertook no war patrols and had no successes against enemy ships, which may indicate that the vessel remained in use only as a training vessel.[1]

At the end of the war, the

Dräger at Lübeck in 1919.[1]

Notes

  1. ^ "SM" stands for "Seiner Majestät" (English: His Majesty's) and combined with the U for Unterseeboot would be translated as His Majesty's Submarine.
  2. mine chutes but changing little else—evolved into the Type UC I coastal minelaying
    submarine. See: Miller, p. 458.
  3. ^ The other seven boats were U-1, U-2, U-4, U-17, and three fellow Type UB I boats, UB-2, UB-5, and UB-11.

References

  1. ^ a b c d e f g h i j k l m n o p 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. ^ a b Tarrant, p. 172.
  3. ^ Gröner 1991, pp. 22–23.
  4. ^ a b c Miller, pp. 46–47.
  5. ^ a b Karau, p. 48.
  6. ^ Williamson, p. 12.
  7. ^ Karau, p. 49.
  8. ^ Helgason, Guðmundur. "WWI U-boat commanders: Wilhelm Werner". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 20 March 2009.
  9. ^ Gibson and Prendergast, p. 63.
  10. ^ Gibson and Prendergast, pp. 331–32.

Bibliography

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