Built in 1971, by Halter Marine Services of New Orleans, Louisiana (hull #314) as the Mister Harold for the Jackson Marine Corporation of Houston, Texas.
Jackson Marine was owned by the Halliburton Corporation of Houston, Texas. The company owned a total of ninety vessels. Consisting mainly of offshore tugs, and supply vessels. With some chemical transport and some well stimulation vessels.
Jackson Marine Corporation later merged with Zapata Gulf Marine of Houston, Texas and Gulf Fleet of Houston, Texas. The company became the largest shipping company in the world with a total of four hundred fifteen vessels. Tidewater Incorporated of New Orleans, Louisiana at that time had about two hundred seventy five vessels.
In the fall of 1986, Seahorse Marine of Lockport, Louisiana merged into Zapata Gulf Marine adding an additional ninety vessels to the fleet.
Seahorse Marine had been founded by the Arthur Levey family as Arthur Levey Boat Company after World War II. The company was later acquired by Petrolane Natural Gas of Belding, Mississippi. Where the company was renamed Seahorse Marine. In 1985, Petrolane was acquired by Texas Eastern of Houston, Texas. Which was a larger natural gas company. However, in the fall of 1986, Texas Eastern traded the company to Zapata Gulf Marine for an exchange of stock.
On January 15th of 1992 Zapata Gulf merged with Tidewater Marine of New Orleans, Louisiana.
She was then sold, where she was renamed as the Harold.
The tug was then acquired by Portland Tug affiliate, Stamford Service, Incorporated of Belfast, Maine. Where she was renamed as the Escort performing assist and escort work in the Cape Cod Canal area.
The tug was later acquired by McAllister Towing and Transportation of New York, New York. Where she was renamed as the Michael J. McAllister.
She is powered by two Alco 12-251 F diesel engines with Lufkin reduction gears at a ratio of 5.6:1 for a rated 4,100 horsepower.
The tug is fitted with four fire stations. Her capacities are 134,5000 gallons of fuel oil, 2,000 gallons of lube oil, 23,300 gallons of potable water.
Her towing gear includes an Intercon double drum towing winch with a line pull of 290,000 lbs and is equipped with 2,400(ft) of 2(in) towing wire in addition to the New England Trawler X1510 capstan.
(Captain Eric Takakjian)