Italian Fiat factory building machinery for Japanese submarine according to the Dutch magazine Marineblad dated 1915-1916 no. 6

An item referred to the magazine Schiffbau reporting that for the submarine being built at Kobe, Japan the Italian factory of Fiat, Turin, Italy would deliver the 2-2.500 hp engines. Displacement 700 (surfaced)-1.070 (submerged) tons. Speed 20 miles while surfaced. Range 6.000 nautical miles. Length 75 metres.