SF Hydro

Hydro at Mæl in 1925
History
NameSF Hydro
OperatorNorsk Transport
Port of registryOslo, Norway
RouteTinnsjø railway ferry
BuilderAkers mek. Verksted, Oslo
CostNOK 334,293
Yard number374
Launched10 December 1914
Out of service20 February 1944
FateSunk by Special Operations Executive (SOE) in World War II
General characteristics
Tonnage493.60 tonnes
Length53 m (174 ft)
Beam9.6
Draft3.2 m
Installed power2 × 186 kW steam engines
Speed8 knots
Capacity120 passengers
Notes[1]

SF Hydro was a Norwegian steam powered railway ferry that operated in the first half of the 20th century on Lake Tinn in Telemark. It connected with the Rjukan Line and Tinnoset Line, at Mæl and Tinnoset, operating between 1914 and 1944. The combined track and ferry service was primarily used to transport raw materials and fertilizer from Norsk Hydro's factory at Rjukan to the port in Skien. It was the target of a Norwegian operation on 20 February 1944, when resistance fighters sank the ferry in the deepest part of Lake Tinn to prevent Nazi Germany from receiving heavy water.

  1. ^ Payton and Lepperød, 1995: 50–56