Engineering:German Type U 151 submarine

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U-155, a Type U 151 U-boat exhibited in London after the First World War.
Class overview
Builders:
  • Reiherstiegwerft (Hamburg)
  • Flensburger Schiffbau (Flensburg)
  • Atlas Werke (Bremen)
  • Stülcken Sohn (Hamburg)
Operators:  Germany Navy
Completed: 7
General characteristics [1]
Displacement:
  • 1,512 tonnes (1,488 long tons) (surfaced)
  • 1,875 tonnes (1,845 long tons) (submerged)
  • 2,272 tonnes (2,236 long tons) (total)
Length:
  • 65.00 m (213 ft 3 in) (o/a)
  • 57.00 m (187 ft) (pressure hull)
Beam:
  • 8.90 m (29 ft 2 in) (o/a)
  • 5.80 m (19 ft) (pressure hull)
Height: 9.25 m (30 ft 4 in)
Draught: 5.30 m (17 ft 5 in)
Installed power:
  • 800 PS (590 kW; 790 bhp) (surfaced)
  • 800 PS (590 kW; 790 bhp) (submerged)
Propulsion:
  • 2 × shafts
  • 2 × 1.60 m (5 ft 3 in) propellers
Speed:
  • 12.4 knots (23.0 km/h; 14.3 mph) surfaced
  • 5.2 knots (9.6 km/h; 6.0 mph) submerged
Range:
  • 25,000 nmi (46,000 km; 29,000 mi) at 5.5 knots (10.2 km/h; 6.3 mph) surfaced
  • 65 nmi (120 km; 75 mi) at 3 knots (5.6 km/h; 3.5 mph) submerged
Test depth: 50 metres (160 ft)
Complement: 6 officers, 50 enlisted
Armament:
  • 2 50 cm (20 in) bow torpedo tubes
  • 18 torpedoes
  • 2 × 15 cm (5.9 in) SK L/45 deck guns with 1672 rounds
  • 2 × 8.8 cm (3.5 in) Uk L/30 deck guns with 764 rounds

Type U 151 U-boats were a class of large, long-range submarines initially constructed during World War I to be merchant submarines and later used by the Kaiserliche Marine (Imperial German Navy).

Background

In addition to the cargo-carrying submarines missing name and missing name (disappeared on a cargo voyage in 1916 while it was still a merchant submarine), six further large cargo submarines were ordered, originally designed to ship material to and from locations otherwise denied German surface ships, such as the United States.

On 16 December 1916, four under construction in the Reiherstieg and Flensburger Schiffbau yards were taken over by the navy and converted to military specification as Type U 151 U-boats, being designated Script error: The function "ship_prefix_templates" does not exist. to Script error: The function "ship_prefix_templates" does not exist.. The remaining two, along with Deutschland, which became Script error: The function "ship_prefix_templates" does not exist., passed into naval control in February 1917, as Script error: The function "ship_prefix_templates" does not exist. and Script error: The function "ship_prefix_templates" does not exist..[2]

All were fitted with two bow torpedo tubes and could carry 18 torpedoes, with the exception of the former Deutschland, which was fitted with six tubes. All were armed with two 15 cm (5.9 in) SK L/45 deck guns, and carried a crew of 56. They had a cruising range of around 25,000 nautical miles (46,000 km; 29,000 mi).

The success of the Type U 151 submarines led to "Project 46", the larger Type U 139 "U-cruisers", designed from the outset as military submarines. [3]

Service

Deutschland made two successful commercial voyages before being commissioned into the Kaiserliche Marine on February 17, 1917, as U-155.

Max Valentiner commanded a Type U 151 U-boat, Script error: The function "ship_prefix_templates" does not exist., and undertook the longest cruise in the war from 27 November 1917 to 15 April 1918, a total of 139 days. High-scoring Waldemar Kophamel also commanded a Type U 151 U-boat, Script error: The function "ship_prefix_templates" does not exist. in late summer and fall of 1917.

List of Type U 151 submarines

Seven Type U 151 submarines were built, of which six were commissioned into the Kaiserliche Marine.[1]

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  • Script error: The function "ship_prefix_templates" does not exist., sunk by HMS E35
  • Script error: The function "ship_prefix_templates" does not exist., the former merchant submarine Deutschland
  • Script error: The function "ship_prefix_templates" does not exist., probably lost to a mine in September 1918
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References

  1. ↑ 1.0 1.1 Gröner 1991, pp. 20–21.
  2. ↑ Williamson, Gordon; Ian Palmer (2002). U-boats of the Kaiser's Navy. Osprey Publishing. p. 16. ISBN 1-84176-362-4. 
  3. ↑ Gröner 1991, pp. 17–19.

Bibliography

  • Gröner, Erich; Jung, Dieter; Maass, Martin (1991). U-boats and Mine Warfare Vessels. German Warships 1815–1945. 2. London: Conway Maritime Press. ISBN 0-85177-593-4. 




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