Built in 2001, by Orange Shipbuilding Incorporated of Orange, Texas (hull #H236) as the Vincennes for the United States Army.
In 2001, the United States Army redesignated the tug as the ST-911 (Enduring Freedom) prior to her completion.
In 2002, she was delivered to the United States Army as the USAV ST-911(Enduring Freedom). And was allocated to the United States Army Transportation Corps at Fort Eustis, Virginia, 7th Transportation Brigade (Expeditionary).
In 2021, the tug was acquired by Dean Marine and Excavating Incororated of Mount Clemens, Michigan. Where she was renamed as the ST-911 (Enduring Freedom).
Powered by two, Cummins KTA19-M3 diesel engines. Turning two, Kaplan, four bladed, fixed pitch propellors, mounted in kort nozzles. She is a twin screw tug, rated at 1,280 horsepower.
Her electrical service is provided by two, Onan, 53kW generator sets. The tug's capacities are 2,979 gallons of fuel, and 768 gallons of lube oil.
The towing equipment consists of two, 7.5 horsepower face winches mounted on the bow.