Built in 1978, at Jakobson Shipyard of Oyster Bay, New York (hull #458) as the Harriet Moran for the Moran Towing Corporation of New York, New York.
In the mid to late 1990's, the Harriet Moran was modified with the addition of a modernized wheelhouse. In addition to extensive additional refurbishments. Original design work on Moran's conversions was performed by naval architect Paul Gow. The redesgined tugs were dubbed the MORtrac class tugs.
The Harriet Moran was the third MORtrac conversion, and the fourth tractor tug to enter service for the Moran Towing Corporation.
Powered by a single, twelve cylinder, EMD diesel engine. Tuning a single, bronze, fixed pitch propeller. Mounted in a Nautican kort nozzle, with a triple vane rudder system. As well as, a 640 horsepower retractable Nautican high performance propeller nozzle or "z-drive." The unit was mounted forward to augment her original single screw configuration. For a rated 3,005 horsepower.
Her electrical service is provided by two 75kW generator sets. The tug's capacities are 55,740 gallons of fuel.
The Harriet Moran performs most of her ship assist work with the stern to the ship, thus allowing the forward "z-drive" to contribute to maneuvering the tug while adding horsepower to any maneuver. She was also outfitted with a JonRie Hawser winch.