Built in 2008, by Eastern Shipbuilding Group of Panama City, Florida (hull #932) as the Brownsville for U.S. Shipping Partners of Edison, New Jersey.
The tug is fitted with an INTERcon Coupler system and powered by two Wartsila 9L32 medium speed Diesel engines with Wartsila Gear (SCV85-P51) with Vertical Offset Ratio of 2.4:1 turning two Lips inboard turning controllable pitch 13.4(in) four bladed nickel aluminum bronze propellers fitted in kort nozzles for a rated 12,000 horsepower.
She is capable of operating on heavy fuel oil as well as No. 2 marine diesel fuel oil. To operate the tug while on heavy fuel oil, a thermal oil heating system has been installed with heavy fuel oil pumps and thermal oil piping all provided by S-Man/American United Marine.
Her electrical service is provided by two 500 KW generators producing 450V turning for 750rpm that are run via PTO from the main engine shafts. Her standby generator is a single Volvo Penta 260 KW generating 480 V turning 1200 rpm. With an additional Volvo Penta 150 KW emergency generator producing 450 V at 1,800 rpm.
The Brownsville is married to a 521(ft) 4(in), 156,000 bbl double hulled barge the Petrochem Trader that was built in 2008, by Bay Shipbuilding of Sturgeon Bay, Wisconsin.