Pictured as: the Allan (Harbor Towing and Docking Company) Photo by: Foggy

Built in 1979, by Parker Brothers Shipyard Incorporated of Houston, Texas (hull #50) as the Allan for the Harbor Towing and Docking Company of Lake Charles, Louisiana.

In 2022, the tug was acquired by Modern American Recycling Services Incorporated of Gibson, Louisiana. Where the tug was renamed as the M.A.R.S. Loki.

Powered by two, EMD 16-645CE diesel engines. With LST Falk Marine MG-DPC reduction gears. She is a twin screw tug, rated at 3,900 horsepower.

Her electrical service is provided by two, 40kW, Delco generator sets. Driven by two, Detroit Diesel 4-71 diesel engines. The tug's capacities are 26,000 gallons of fuel, 900 gallons of lube oil, 150 gallons of hydraulic oil, 1,500 gallons and 10,000 gallons of ballast.

The towing equipment consists of a 24(in) Capstan. Driven by a 15 horsepower electric motor, mounted on her stern.