Built in 1978, by the Cenac Shipyard Incorporated Houma, Louisiana (hull #21) as the Leah Cenac for the Cenac Towing Company Incorporated of Houma, Louisiana.
In 2000, the tug was acquired by Settoon Towing Incorporated of Pierre Part, Louisiana. Where she was renamed as the Emily P. Settoon.
In 2006, Settoon Towing Incorporated renamed the tug as the P. Settoon.
In 2015, she went out of documentation. Her current, and or final disposition is unknown. The tug was powered by a single Cummins KT19-M diesel engine. She was as single screw tug, rated at 600 horsepower.