Built in 1982, by the Dravo Corporation of Neville Island, Pennsylvania (hull #8527) as the Agamemnon for the Spartan Transportation Company of Cincinnati, Ohio.

In 1989, the tug was acquired by the Ingram Barge Company of Nashville, Tennessee. Where the tug was renamed as the Philip M. Pfeffer.

Powered by two, GM 16-645E7BA diesel engines. With Falk reduction gears, at a ratio of 4.345:1. She is a twin screw towboat, rated at 6,140 horsepower.