a test ship before being scuttled during the 1950s. Design and description The 1930 London Naval Treaty had a clause that ships below standard displacement did not count against the national tonnage limits, so the Kriegsmarine attempted to design a high-speed, ocean-going torpedo boat with a maximum displacement of 600 long tons. This proved to be impossible as the over-ambitious high-speed requirement demanded use of the same troublesome high-pressure boilers that were being installed in the Type 1934 destroyers. The maintenance problems with the boilers were exacerbated by the lack of access to the machinery allowed by the restricted spaces of the lightly-built and narrow hull. The naval historian M. J. Whitley deemed "the whole concept, with the benefit of hindsight, must be considered a gross waste of men and materials, for these torpedo boats were rarely employed in their designed role." The boats had an overall length of and were long at the waterline. After the bow was rebuilt in 1941 to improve seaworthiness, the overall length increased to . They had a beam of , and a mean draft of at deep load and displaced at standard load and at deep load. Their hull was divided into 12 watertight compartments and it was fitted with a double bottom that covered 75% of their length. The boats had a metacentric height of . They were considered excellent sea boats and were very maneuverable. They were, however, very wet forward in a head sea until the bow was rebuilt. The crew numbered 119 officers and sailors. The Type 35s had two sets of Wagner geared steam turbines, each driving a single three-bladed propeller, using steam provided by four Wagner water-tube boilers that operated at a pressure of and a temperature of . The turbines were designed to produce for a speed of . The boats carried a maximum of of fuel oil which gave a range of at . Armament As built, the Type 35 class mounted a single 42-caliber SK C/32 gun on the stern. Its mount had a range of elevation from -10° to +50° and the gun fired projectiles at a muzzle velocity of . It had a range of at an elevation of +44.4°. Anti-aircraft defense was provided by a single 80-caliber SK C/30 anti-aircraft (AA) gun superfiring over the 10.5 cm gun. The hand-operated mount had a maximum elevation of 80° which gave the gun