Built in 2009, by Thoma-Sea Boat Builders Incorporated of Lockport, Louisiana (hull #137) as the Anacostia for the Vane Brothers Company of Baltimore, Maryland.
She was the thirteenth Patapsco class tug designed by Frank Basile of Entech and Associates of Houma, Louisiana. And constructed by Thoma-Sea Boat Builders for the Vane Brothers Company.
Named for the Anacostia River, which is a river in the Mid Atlantic region of the United States. Running from Prince George's County in Maryland into Washington, D.C. Where it joins with the Washington Channel to empty into the Potomac River at Buzzard Point and into the Chesapeake Bay.
The name "Anacostia" derives from the area's early history as Nacotchtank, a settlement of Necostan or Anacostan Native Americans on the banks of the Anacostia River.
Powered by two, Caterpillar 3516 diesel engines. With Reintjes WAF-872 reduction gears. Turning two, 97(in), fixed pitch, propellers. Mounted in CNF, Type 37, kort nozzles. She is a twin screw tug, rated at 4,200 horsepower.
The tug's electrical service is provided by two, 72kW, Caterpillar 3054T generator sets. Her capacities are 89,910 gallons of fuel oil, and 8,816 of potable water.
Her towing gear consists of an INTERcon, double drum, towing winch. Driven by a dedicated John Deere diesel engine.