Engineering:Type U 19 submarine

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Short description: German pre-World War I submarine class

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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.[1]

The four Type 19 U-boats were ordered on 25 November 1910 from the Kaiserliche Werft Danzig shipyard.[1]

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.[2][3]

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.[2] Constructional diving depth[lower-alpha 1] was 50 m (164 ft 1 in).[4][3]

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.[2][3]

Ships

Name launched commissioned[5] merchant ships sunk
(nbr / GRT )[5] 		warships sunk
( nbr / tons )[5] 		Fate[2]
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.[4]

Citations

  1. ↑ 1.0 1.1 Rössler 1981, p. 28.
  2. ↑ 2.0 2.1 2.2 2.3 Möller & Brack 2004, p. 23.
  3. ↑ 3.0 3.1 3.2 Gröner 1991, pp. 4–5.
  4. ↑ 4.0 4.1 Rössler 1981, p. 26.
  5. ↑ 5.0 5.1 5.2 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



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