Issued in 1981 as one in a set of 4 commemorating Norwegian lake shipping the Motor Ferry (MF) Storegut is featured on the 2k.30 value.

The MF Storegut was constructed as a railway ferry to work on the Tinnsjø railway ferry service on lake Tinn between Tinnoset and Mæl. She was launched on May 25th, 1956. When the innsjø railway ferry service stopped operating in 1991 she was withdrawn from service. The Storegut is now used for chartered cultural service.

She could transport up to 21 chemical cars and accommodate 400 passengers. 1,119 Tons she was the largest lake ferry when launched. He has a length of 287 feet with a beam of 37 feet. Her draught is 12 feet.

Sources:
https://en.wikipedia.org/wiki/MF_Storegut
http://www.shipstamps.co.uk/forum/viewtopic.php?f=2&t=7504&p=7500&hilit=Storegut#p7500