 Diesel traction was considered, but at the time diesel was not optimal for ships.She was built by A/S Moss Værtft & Dokk at the docks on Lake Tinn and launched on 18 June 1929 and cost NOK 932,000 to build, of which Norsk Transport paid NOK 829,485.She quickly became the main ferry; in 1939 she was in service 340 days, while "Hydro" operated 32 days and "Rjukanfos" 18.