Torpedo-boats of the German Navy (1871-1919)
Torpedo boats had been operated by the Imperial German Navy (German: "Kaiserliche Marine") from the very beginning. The "Imperial Navy" existed between 1871 and 1919. In 1870 there had been 14 tugboats and harbour vessels and 7 rowing boats, which had been armed with spar torpedoes to protect the Elbe and Weser during the Franco-Prussian War. Small torpedo boats – pre-war types. 6 boats built at AG Weser, Bremen; 10 boats built at AG Vulcan, Stettin; 6 boats built at Schichau, Elbing. The later USS "Somers" was built as a private  speculation by Schichau in 1897. Small and coastal torpedo boats in World War I. Small torpedo boats. 60 boats of S 7"-class had been built at Schichau, Elbing, 22 boats of S 66"-class had been built at Schichau and the boats G 88 and G 89 had been built at Germaniawerft in Kiel. The first boats had been stricken in 1905. The remaining boats had been renamed in 1910 and 1914 as SM "T 11" – SM "T 65". "S12, T 21, T 25, S 26, S 32, S 41, S 48, T 50" got lost by collisions or storm. The  S 66-class boats had been renamed in 1914 as SM "T 66" – SM "T 89". In World War I the remaining boats had been used as mine sweepers, school boats and tenders. "T 43, T 46, T 47, T 51, T 52, T 54, T 57, T 58, T 64", "T 65" and "T 66, T 67, T 68, T 78" had been sunk by mines. Coastal torpedo boats. The A-class torpedo boats were a class of single-funnelled torpedo boat or light destroyer designed for operations off the coast of occupied Flanders in the First World War. Six  groups of vessels were built under the class between 1914 and 1918, increasing in displacement from 109 tons to 335 tons. Divisional torpedo boats. This boats had been the predecessors of the ocean-going torpedo boats. In the first years they had been used as torpedo boat leaders. "D 1 – D 9" had been built by Schichau, Elbing. "D 10" was built by Thornycroft. German ocean-going torpedo boats. The ocean-going torpedo boats ("Hochseetorpedoboote") or large torpedo boats ("Große Torpedoboote") had been in many ways the equivalent of the contemporary destroyers in other navies. But the gun armament had  been lighter than British destroyers. In 1916 most of the boats of the 1913/1913 Mob-type had been refitted with three much more powerful SK L/45 guns, with 70 shells per gun. Destroyer types. The "B 97" and "G 101"-class destroyers were re-armed in early 1916 by replacing the 8.8 cm guns with four 10.5 cm SK L/45 naval guns, which could fire a shell to a distance of .