Built in 1967, by Jacksonville Shipyard of Jacksonville, Florida (hull #648) as the Esso Delaware Valley for the Esso Shipping Company of Wilmington, Delaware.
In 1972, Esso Shipping became Exxon Shipping of Wilmington, Delaware where the tug was renamed as the Exxon Delaware Valley. However, Exxon later renamed the tug as the Exxon San Jacinto.
Although in 1985, the tug was renamed as the Exxon San Jacinto. Where she was transferred to duties as an assist tug in Houston, Texas.
In 1993, the Exxon Shipping Company merged with the Mobil Oil Corporation of New York, New York. To form SeaRiver Maritime of Houston, Texas. Where the tug was renamed as the S/R San Jacinto.
In 2003, the tug was acquired by McAllister Towing and Transportation of New York, New York. Where she was renamed as the Roderick McAllister.
Powered by two Caterpillar 12-D398 turbo diesel engines with Lufkin reduction gears at a ratio of 7.14:1 for a rated 1,800 horsepower. She is a twin screw tug, fitted kort nozzles and flanking rudders.
The tug's capacities are 26,670 gallons of fuel oil, 628 gallons of lube oil and 3,480 gallons of potable water.
She is also outfitted with two fire monitors rated at 1,500 Gallons Per Minute.
(Robert Silva, Auke Visser)