Engineering:Type U 19 submarine

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Short description: German pre-World War I submarine class
Class overview
Builders: Kaiserliche Werft Danzig
Operators:  Germany Navy
Preceded by: Type U 17
Succeeded by: Type U 23
Completed: 4
Lost: 1
General characteristics [1][2]
Displacement:
  • 650 t (640 long tons) surfaced
  • 837 t (824 long tons) submerged
Length: 64.15 m (210 ft 6 in)
Beam: 6.10 m (20 ft 0 in)
Height: 7.30 m (23 ft 11 in)
Draught: 3.58 m (11 ft 9 in)
Propulsion:
  • 2 shafts
  • 2 × MAN 8-cylinder two stroke diesel motors with 1,700 PS (1,677 bhp; 1,250 kW)
  • 2 × AEG double modyn with 1,200 PS (1,184 shp; 883 kW)
  • 320 rpm submerged
Speed:
  • 15.4 knots (28.5 km/h; 17.7 mph) surfaced
  • 9.5 knots (17.6 km/h; 10.9 mph) submerged
Range:
  • 9,700 nmi (18,000 km; 11,200 mi) at 8 kn surfaced
  • 80 nmi (150 km; 92 mi) at 5 kn submerged
Test depth: 50 m (164 ft 1 in)
Complement: 4 officers, 31 men
Armament:

Type U 19 was a class of U-boats built during World War I by the Kaiserliche Marine. Type U 19 U-boats were the first U-boats with Diesel engines for surface propulsion and charging the batteries for the electrical engines. Originally the preceding Type U 17 submarine was intended to be the first diesel U-boat, but delays in developing these diesel engines meant that these two Type U 17 U-boats received Kerosene engines instead. Other improvements included the change from 45-cm to 50-cm torpedo tubes for launching the G6 torpedo, and the installation of a deck gun.[3]

The four Type 19 U-boats were ordered on 25 November 1910 from the Kaiserliche Werft Danzig shipyard.[3]

Design

Type U 19s had an overall length of 64.15 m (210 ft 6 in) The boats' beam was 6.10 m (20 ft 0 in), the draught was 3.58 m (11 ft 9 in), with a total height of 7.30 m (23 ft 11 in). The boats displaced 650 tonnes (640 long tons) when surfaced and 837 t (824 long tons) when submerged.[1][4]

Type U 19s were fitted with two MAN 8-cylinder two-stroke diesel engines with a total of 1,700 metric horsepower (1,250 kW; 1,677 bhp) for use on the surface and two AEG double-acting electric motors with a total of 880 kW (1,196 PS; 1,180 shp) for underwater use. These engines powered two shafts, which gave the boats a top surface speed of 15.4 knots (28.5 km/h; 17.7 mph), and 9.5 knots (17.6 km/h; 10.9 mph) when submerged. Cruising range was 9,700 nautical miles (18,000 km; 11,200 mi) at 8 knots (15 km/h; 9.2 mph) on the surface and 80 nautical miles (150 km; 92 mi) at 5 knots (9.3 km/h; 5.8 mph) submerged.[1] Constructional diving depth[lower-alpha 1] was 50 m (164 ft 1 in).[5][4]

The U-boats were armed with four 50 cm (20 in) torpedo tubes, two fitted in the bow and two in the stern, and carried six torpedoes. The boats' complement was 4 officers and 31 enlisted.[1][4]

Ships

Name launched commissioned[6] merchant ships sunk
(nbr / GRT )[6]
warships sunk
( nbr / tons )[6]
Fate[1]
U-19 10 Oktober 1912 6 July 1913 55 / 101.389 none Surrendered on 24 November 1918. Scrapped in 1919-20 at Blyth
U-20 18 December 1912 5 Augustus 1913 36 / 104.300 none Stranded on 5 November 1916 at Jutland. Broken up in 1925.
U-21 8 February 1913 22 September 1913 36 / 78.712 4 / 34.440 Sunk 22 February 1919 whilst on her way to internment
U-22 6 March 1913 25 November 1913 44 / 46.365 none Surrendered on 1 December 1918. Scrapped in 1919-20 at Blyth

Footnotes

Notes

  1. Constructional diving depth had a safety factor of 2.5, which meant that crushing depth was 2.5 times construction diving depth.[5]

Citations

  1. 1.0 1.1 1.2 1.3 1.4 Möller & Brack 2004, p. 23.
  2. Rössler 1981, p. 327.
  3. 3.0 3.1 Rössler 1981, p. 28.
  4. 4.0 4.1 4.2 Gröner 1991, pp. 4–5.
  5. 5.0 5.1 Rössler 1981, p. 26.
  6. 6.0 6.1 6.2 Herzog 1993, p. 67.

Bibliography

  • Gröner, Erich (1991). German Warships 1815–1945, U-boats and Mine Warfare Vessels. 2. London: Conway Maritime Press. ISBN 0-85177-593-4. 
  • Herzog, Bodo (1993) (in de). Deutsche U-Boote : 1906 - 1966. Erlangen: Müller. ISBN 9783860700365. 
  • Möller, Eberhard; Brack, Werner (2004). The Encyclopedia of U-Boats. London: Chatham. ISBN 1-85367-623-3. 
  • Rössler, Eberhard (1981). The U-boat: The evolution and technical history of German submarines. London: Cassell & Co. ISBN 0-304-36120-8. 

Template:U-19 class submarines