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. Where the tug retained her name. However in 2002, the tug was renamed as the Harold.
In 2005, the tug was acquired by Arthur Fournier of the Fournier Towing and Ship Service of Belfast, Maine. Where she was renamed as the Escort. The tug primarily worked as an escort and assist vessel in Buzzards Bay, and the Cape Cod Canal in Massachusetts.
In 2006, she was acquired by McAllister Towing and Transportation of New York, New York. Where she was renamed as the Michael J. McAllister.
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.
Her capacities are 134,5000 gallons of fuel oil, 2,000 gallons of lube oil, and 23,300 gallons of potable water.
Her towing equipment consists of an Intercon double drum towing winch. Equipped with 2,400(ft) of 2(in) towing wire, on each drum. As well as, an additional New England Trawler X1510 capstan. The tug is fitted with four fire stations.
(Captain Eric Takakjian, Captain Brian Fournier)