Built in 1972, by the Marinette Marine Corporation of Marinette, Wisconsin (hull #816) as the YTB 816 (Campti) for the United States Navy.
The tug was delivered to the navy the 22nd December 1972. She was assigned to the Naval Submarine Base New London, Connecticut. However, sometime between 1985 and 1990, she was reassigned to Naval Amphibious Base Little Creek Virginia, where she served until the tug was decommissioned.
She was stricken from the Navy List on the 9th of November 1999. The tug was sold by Defense Reutilization and Marketing Service (DRMS) on the 27th September 2000 to Hartley Marine Services of Boothbay Harbor, Maine. Where she was renamed as the Seguin.
Powered by a single Fairbanks Morse diesel engine, with Western 270MRB reduction gears at a ratio of 5:6:1. Turning a single 144(in) by 89(in) stainless steel propeller. For a rated 2,000 horsepower.
The tug's electrical service is provided by two 110kw Delco AC generators. Her capacities are 29,946 gallons of fuel, 18.5 long tons of ballast, 2,463 gallons of potable water, and 500 gallons of lube oil.
Her towing gear consists of an Almond Johnson 320 towing winch, mounted on her stern. Outfitted with 1,500(ft) of 1.5(in) galvanized steel wire wire. And, a 24(in) New England Trawler Electro Hydraulic capstan on her bow.
However, in 2013, Hartley Marine was acquired by Winslow Marine of Southport, Maine. Where the tug retained her name.
In 2014, the tug was acquired by Foreign Interests.