Built in 1976, by Equitable Equipment of Madisonville, Louisiana (hull #1661) as the Pye Theriot for Nolty J. Theriot Offshore of Golden Meadow, Louisiana.
In 1980, the tug was acquired by the Marathon Petroleum Corporation of Findlay, Ohio. Where she was renamed as the Loretta J.
The tug was also outfitted with hydraulic pads that extend from the sides of the tug, with large push lines connected to hydraulic rams that pull the tug into the notch. Marathon Oil "married" the tug with a 442(ft) 150,000 bbl barge. Named the MM-1 (built in 1981, for Marathon Oil by Galveston Shipbuilding, of Galveston, Texas) for petroleum transportation work in the Gulf of Mexico.
In 1993, the unit was acquired by the Eklof Marine Corporation of Staten Island, New York. Where the tug was renamed as the Yankee.
In 1998, the Eklof Marine Corporation of was acquired by K-Sea Transportation of East Brunswick, New Jersey. Where the tug retained her name. However, the barge was renamed as the DBL 151.
In 2011, K-Sea Transportation was acquired by the Kirby Corporation of Channelview, Texas. Where the tug retained her name.
In 2013, the tug was acquired by DonJon Marine of Hillside, New Jersey. Where she retained her name. The tug was sent to Donjon Shipbuilding and Repair of Erie, Pennsylvania. Where the tug was rebuilt, a new towing winch was added, as well has having her upper wheelhouse removed.
She is a twin screw tug rated at 7,200 horsepower, with a fuel capacity of 204,675 gallons.