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.
The four Type 19 U-boats were ordered on 25 November 1910 from the Kaiserliche Werft Danzig shipyard.
Design Type U 19s had an overall length of The boats' beam was , the draught was , with a total height of . The boats displaced when surfaced and when submerged.
Type U 19s were fitted with two MAN 8-cylinder two-stroke diesel engines with a total of for use on the surface and two AEG double-acting electric motors with a total of for underwater use. These engines powered two shafts, which gave the boats a top surface speed of , and when submerged. Cruising range was at on the surface and at submerged. Constructional diving depth was .
The U-boats were armed with four 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.
Ships +Namelaunchedcommissionedmerchant ships sunk(nbr / GRT )warships sunk( nbr / tons )FateU-1910 October 19126 July 191355 / 101.389noneSurrendered on 24 November 1918. Scrapped in 1919-20 at BlythU-2018 December 19125 August 191336 / 104.300noneStranded on 5 November 1916 at Jutland. Broken up in 1925.U-218 February 191322 September 191336 / 78.7124 / 34.440Sunk 22 February 1919 whilst on her way to internmentU-226 March 191325 November 191344 / 46.365noneSurrendered on 1 December 1918. Scrapped in 1919-20 at Blyth
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