Junker aircraft engines converted by the Yugoslavian Aleksandar Rankovic Torpedo Factory to be used for motor launches according to a CIA report dated

An item dealing with the Aleksandar Rankovic Torpedo Factory, Rijeka, Yugoslavia/Croatia [the former Whitehead plant at Fiume, Austria-Hungary] reported that German Junker aircraft machines were dissembled, where needed were parts replaced and next step was to test the engine on a test bench. If the engine still did not work properly was the process repeated. The engine was with a 2:1 gear ration connect with a driving shaft and built in to motor torpedo boats. The original Packard engines were removed and stored in cases marked with XP. On 15 August 1949 was the first such engine mounted in a motor torpedo boat. The maximum speed achieved was 43 miles. It was possible to replace the machinery of 50 motor torpedo boats each month. The presence of at least 3 motor torpedo boats near the factory was common, in September 1949 there were even six. Presumably were those boast stationed at Pola [Pula, Croatia].

Note
1. Founded in the 1850’s, joined by the British engineer Robert Whitehead in 1858 and started building large machinery for the Austrian navy. In 1864 was Whitehead joined by naval captain Giovanni Biagio Luppis for building an exploding boat. On 20 December 1866 however was the first torpedo presented followed by the founding of the Torpedofabrik Whitehead&Comp. Demolished during the Second World War was the factory first named Jadran, since 1947 Aleksandar Rankovic and in 1953 renamed Engine Factory Torpedo. Around 1965/1966 ended the production of torpedoes.

Source
The report was published on www.archive.org, document number CIA-RDP83-00415R006000020001-1