|GE entered the road switcher market in 1960 with the introduction of their U? (Universal) line of diesels. Their goal was to offer replacement diesels for the aging fleet of first generation diesels.|
This model group was quickly nicknamed U-Boats? The U-33C Diesel was first produced in 1968 with 3300 H.P. and sporting large radiator wings to make it easily distinguishable from earlier model U-Boats. Williams offers the U33C in the Delaware and Hudsonpaint scheme.