Built in 1961, by the Dravo Corporation of Wilmington, Delaware (hull # 4120) as the Marie S. Moran for the Dravo Corporation of Wilmington, Delaware.
Although the tug was listed as constructed for the Moran Towing Company of New York, New York. The tug was chartered by the Moran Towing Company from the Dravo Corporation. However, Moran never outright acquired the tug.
In 1962, the tug came off charter. And, was acquired by the McAllister Brothers Towing Company of New York, New York. Where she was renamed as the Teresa McAllister
Outfitted with a kort nozzle, and, flanking rudder. The tug is single screw, rated at 2,200 horsepower.