Built in 1964, by the Dravo Corportation of Pittsburgh, Pennsylvania (hull #4562) as the J.P. McAllister for the McAllister Brothers Towing Company of New York, New York.
Powered by a single, EMD 16-645-E5 diesel engine. With a Falk reduction gear, at a ratio of 3.96:1. The tug is single screw, with a kort nozzle, and flanking rudder. For a rated 3,000 horsepower.
Her capacities are 60,684 gallons of fuel oil, 525 gallons of lube oil, and 4,875 gallons of potable water.
The tug's towing gear includes an Almon Johnson, single drum, towing winch. Equipped with 2,000(ft) of 2(in) towing wire. She is outfitted with an Aurora OJP Fire Pump, rated at 500 Gallons Per Minute.