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SM U-33 (Germany)

History
German Empire
Name: U-33
Ordered: 29 March 1912
Builder: Germaniawerft, Kiel
Yard number: 193
Laid down: 7 November 1912
Launched: 19 May 1914
Commissioned: 27 September 1914
Fate: Surrendered at the end of the war broken up at Blyth in 1919-20
General characteristics
Class and type: German Type U 31 submarine
Displacement:
  • 685 t (674 long tons) (surfaced)
  • 878 t (864 long tons) (submerged)
Length:
Beam:
  • 6.32 m (20 ft 9 in) (o/a)
  • 4.05 m (13 ft 3 in) (pressure hull)
Draught: 3.56 m (11 ft 8 in)
Installed power:
Propulsion:
  • 2 × shafts
  • 2 × 1.60 m (5 ft 3 in) propellers
Speed:
  • 16.4 knots (30.4 km/h; 18.9 mph) (surfaced)
  • 9.7 knots (18.0 km/h; 11.2 mph) (submerged)
Range:
  • 8,790 nmi (16,280 km; 10,120 mi) at 8 knots (15 km/h; 9.2 mph) (surfaced)
  • 80 nmi (150 km; 92 mi) at 5 knots (9.3 km/h; 5.8 mph) (submerged)
Test depth: 50 m (164 ft 1 in)
Complement: 4 officers, 31 enlisted
Armament:
Service record
Part of: Imperial German Navy
Commanders:
  • 27 September 1914 – 23 September 1916 – Konrad Gansser
  • 24 September 1916 – 1 April 1917 – Gustav Sieß
  • 2 April 1917 – 30 November 1918 – Hellmuth von Doemming
Victories:
  • 82 ships sunk for a total of 193,529 GRT.
  • 8 ships damaged for a total of 36,452 tons.
  • 1 ship taken as prize for a total of 453 tons.

SM U-33 was a German Type U 31 U-boat of the Imperial German Navy.

German Type U 31 submarines were double-hulled ocean-going craft similar to Type 23 and Type 27 boats in dimensions, differing only slightly in propulsion and speed. They were considered very good high sea boats with average manoeuvrability and good surface steering.

U-33 had an overall length of 64.70 m (212 ft 3 in), her pressure hull was 52.36 m (171 ft 9 in) long. The boat's beam was 6.32 m (20 ft 9 in) (o/a), while the pressure hull measured 4.05 m (13 ft 3 in). Type 31s had a draught of 3.56 m (11 ft 8 in) with a total height of 7.68–8.04 m (25 ft 2 in–26 ft 5 in). The boats displaced a total of 971 tonnes (956 long tons); 685 t (674 long tons) when surfaced and 878 t (864 long tons) when submerged.

U-33 was fitted with two Germania 6-cylinder two-stroke diesel engines with a total of 1,850 metric horsepower (1,361 kW; 1,825 bhp) for use on the surface and two Siemens-Schuckert double-acting electric motors with a total of 1,200 PS (883 kW; 1,184 shp) for underwater use. These engines powered two shafts, each with a 1.60 m (5 ft 3 in) propeller, which gave the boat a top surface speed of 16.4 knots (30.4 km/h; 18.9 mph), and 9.7 knots (18.0 km/h; 11.2 mph) when submerged. Cruising range was 8,790 nautical miles (16,280 km; 10,120 mi) at 8 knots (15 km/h; 9.2 mph) on the surface, and 80 nmi (150 km; 92 mi) at 5 knots (9.3 km/h; 5.8 mph) under water. Diving depth was 50 m (164 ft 1 in).


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