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 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.
The new nozzle and propeller, were intended to improve bollard pull by 35 to 40 percent. Her original propeller was removed and replaced with a triple vane rudder system. The triple vane rudder system was installed with the intention of increasing the general maneuverability of the tug. She was also fitted with a new JonRire Intertech hawser winch on her stern.
A modernized wheelhouse was added as well, 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 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.