SM UB-128

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For other ships of the same name, see German submarine U-128.
UB 148 at sea 2.jpeg
UB-148 at sea, a U-boat similar to UB-128.
Career (German Empire)
Name: UB-128
Ordered: 6/8 February 1917[1]
Builder: AG Weser, Bremen[2]
Cost: 3,654,000 German Papiermark[2]
Yard number: 301[2]
Launched: 10 April 1918[3]
Commissioned: 11 May 1918[3]
Fate: Surrendered 3 February 1919.[3]
General characteristics
Class & type: German Type UB III submarine
Type: Coastal submarine
Displacement: 512 t (504 long tons; 564 short tons) surfaced
643 t (633 long tons; 709 short tons) submerged[2]
Length: 55.85 m (183.2 ft) o/a[2]
Beam: 5.8 m (19 ft)[2]
Draught: 3.72 m (12.2 ft)[2]
Propulsion: 2 shafts
6-cylinder Benz diesel engines,[4] 1,060 ihp (790 kW)
Schiffsunion[4] electric motors, 788 ihp (588 kW)[2]
Speed: 13.9 knots (25.7 km/h; 16.0 mph) surfaced
7.6 knots (14.1 km/h; 8.7 mph) submerged[2]
Range: 7,280 nmi (13,480 km; 8,380 mi) at 6 kn (11 km/h; 6.9 mph) surfaced
55 nmi (102 km; 63 mi) at 4 kn (7.4 km/h; 4.6 mph) submerged[2]
Test depth: 50 m (160 ft)[4]
Complement: 3 officers, 31 men[4]
Armament: • 5 × 50 cm (19.7 in) torpedo tubes (4 bow, 1 stern) with 10 torpedoes
• 1 × 10.5 cm (4.13 in) deck gun[4]
Service record
Part of:
Commanders:

SM UB-128 was a German Type UB III submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was commissioned into the German Imperial Navy on 11 May 1918 as SM UB-128.[nb 1]

UB-128 was surrendered on 3 February 1919 in accordance with the requirements of the Armistice with Germany and broken up in Falmouth in 1921.[3]

Construction[edit]

She was built by AG Weser of Bremen[2] and following just under a year of construction, launched at Bremen on 10 April 1918. UB-128 was commissioned later the same year . Like all Type UB III submarines, UB-128 carried 10 torpedoes and was armed with a 10.5 cm (4.13 in) deck gun. UB-128 would carry a crew of up to 3 officer and 31 men and had a cruising range of 7,280 nautical miles (13,480 km).[2] UB-128 had a displacement of 512 t (504 long tons; 564 short tons) while surfaced and 643 t (633 long tons; 709 short tons) when submerged. Her engines enabled her to travel at 13.9 knots (25.7 km/h; 16.0 mph) when surfaced and 7.6 knots (14.1 km/h; 8.7 mph) when submerged.[2]


Notes[edit]

Footnotes
  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.
Citations
  1. ^ Rössler 1979, p. 55.
  2. ^ a b c d e f g h i j k l m n Gröner 1985, p. 52.
  3. ^ a b c d Gröner 1985, p. 55.
  4. ^ a b c d e Gröner 1985, p. 53.


References[edit]