The MS Theofilos was a passenger/vehicle ferry built at the Nobiskrug shipyard in Rendsburg, Germany in 1975.

TT-Line Company Pty Ltd, better known by its trading name Spirit of Tasmania is a company which has been operating ferries from mainland Australia to Tasmania since July 1985. The company was separated from the Tasmanian Government's Department of Transport in 1993, becoming a government business enterprise wholly owned by the Government of Tasmania where it was then named Spirit of Tasmania in August 1993.