Graceful, yet functional, they pulled large liners and pushed heavy barges with ease. During the 1930's, steam engines lost ground to Diesel propulsion, and by the 1960's the steam units were all but gone. A few steam tugs survive today as museum relics. Steam Towboat TAURUS Instruction Manual The Steam Towboat Taurus By Erik A. R. Ronnberg Jr., 1978 Instruction Manual Update By Ben Lankford, 1995 The Model Shipways kit is based on the tugs Betsy Ross of Philadelphia, 1903, and the Sommers N. Sm