Built in 2019, by Conrad Shipyard Incorporated of Morgan City, Louisiana (hull #C-1186) for Harley Marine Services Incorporated of Seattle, Washington.
In 2019, Harley Marine Services Incorporated became the Centerline Logistics Corporation of Seattle, Washington. The uncompleted tug was "laid up" at Conrad Industries Incorporated in Orange, Texas.
In 2020, the tug was acquired by the Norfolk Tug Company of Norfolk, Virginia. Where she was completed, and renamed as the Stephen J Leaman.
Powered by two, Tier IV compliant, Caterpillar 3512C diesel engines. Turning two, stainless steel, fixed pitch propellers. She is a twin screw tug, rated at 3,000 horsepower.
Her electrical service is provided by two, 99kW, Caterpillar C4.4 generator sets.