Built in 1978, by Halter Marine of New Orleans, Louisiana (hull #582) as the Capt. Jentry for the Jackson Marine Corporation of Houston, Texas.
In 1978, the tug was leased to the Darce Towing Company of Houston, Texas. Where she operated as an anchor tug, with pipe laying, and jet barges in the Gulf of Mexico during the spring, summer, and winter of 1978.
The Jackson Marine Corporation 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 well stimulation vessels.
The Jackson Marine Corporation later merged with the Zapata Gulf Marine Company of Houston, Texas and the Gulf Fleet Marine Company of Houston, Texas. The company became the largest shipping company in the world with a total of four hundred fifteen vessels.
In the fall of 1986, Seahorse Marine Incorporated of Lockport, Louisiana merged into the Zapata Gulf Marine Company adding an additional ninety vessels to the fleet.
The Seahorse Marine Company 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 the Texas Eastern Company of Houston, Texas. Which was a larger natural gas company. However in the fall of 1986, the Texas Eastern Company traded the company to the Zapata Gulf Marine Company for an exchange of stock.
In 1984, the tug was acquired by the Hess Oil Corporation of New York, New York. Where she was renamed as the North Star.
In 1993, the Hess Oil Corporation's Fleet was acquired by Leevac Marine Incorporated of Jennings, Louisiana. Where the tug was renamed as the North Service.
IIn 1997, Leevac Marine Incorporated merged with Hornbeck Offshore Services of Covington, Louisiana. The two companies formed Hornbeck Offshore Transportation. Where the tug retained her name.
In 2003, the tug was acquired by the Gellatly Criscione Services Corporation of Point Pleasant, New Jersey. Where she was renamed as the Mary Gellatly.
In 2013, the tug was acquired by Winlsow Marine Incorporated of Southport, Maine. Where she was renamed as the Alice Winslow.
Powered by two, sixteen cylinder, Caterpillar D-399 diesel engines. With Reintjes reduction gears, at a ratio of 6:1. Turning two, fixed pitch, high efficiency, four bladed, 100(in) by 76(in), propellers For a rated 2,200 horsepower.
Her electrical service is provided by two, 75kW generator sets. Driven by two, GM 6-71 diesel engines.
In 2010, the tug was outfitted with and upper wheelhouse. The tug's towing gear consists of a double drum tow winch, equipped with 2,000(ft) of 1.75(in) diameter stainless steel towing wire. The towing winch is driven by a single, GM 6-71 diesel engine.
(Captain Eric Takakjian, Captain John W. Hume, Captain Brian Fournier)