Trafik, Working life museum and listed historical ship in Hjo, Sweden.

S/S Trafik is a steel-hulled vessel approximately 31 meters long and just under 6 meters wide that functions today as a working life museum and protected historical ship in Hjo. It retains its original steam propulsion system and interior fittings that demonstrate its former role carrying passengers.

Built at Bergsunds Mekaniska Verkstad, S/S Trafik made its first voyage on 1 November 1892 from Hjo to Hästholmen, replacing an earlier steamer of the same name. After Ångfartygs AB Hjo–Hästholmen went bankrupt in 1933, the municipally owned Hjo Rederi AB took over as operator. The last season was summer 1959; in 1972, when scrapping was decided, Sällskapet S/S Trafiks Vänner bought the ship for 5,000 kronor and had it restored over 30,000 working hours before its return to Hjo in 1977.

The vessel takes its name from the Swedish word for traffic, reflecting its original role as a transport link across the lake. Visitors can explore the engine rooms and passenger spaces that show how people once traveled between shoreline communities.

The ship carries 250 passengers and a crew of six. After 1959 it was laid up in Hjo harbour and now runs summer tours to Visingsö, Hästholmen and Vadstena, plus jazz cruises. Check departure times before travelling.

In 1896 King Oscar II, an admiral as well as monarch, travelled to Hjo by train, took command of the ship and steered her across Lake Vättern. Two portraits in the aft salon depict Oscar II and Sofia of Nassau, spelled "Nassay" on board.