Built in 2009, by Thoma-Sea Boat Builders of Lockport, Louisiana (hull #109) as the Yellowfin for Penn Maritime Incorporated of Stamford, Connecticut.
She was the third of five identical FIN class ATB's designed for Penn Maritime Incorporated of Stamford, Connecticut. By Naval Architect, Frank Basile of Entech Associates of Houma, Louisiana.
Powered by two, sixteen cylinder, Cummins V-16 QSK-60 engines. With Reintjes GmbH LAF 873 reduction gears, at a ratio of 7.455:1. Turning two, 104(in), skewed, propellers. Mounted in Nautican kort nozzles, with Nautican, triple, shutter rudders. For a rated 4,000 horsepower.
Her electrical service is provided by two, 99kW, Marathon Magna-Plus 363CSL1607 generator sets. And a third, 99kW, Marathon Magna-Plus 363CSL1607 generator sets. The tug's capacities are 104,994 gallons of fuel, 660 gallons of lube oil, 660 gallons of hydraulic oil, 7,370 gallons of water, and 32,651 gallons of ballast.
Outfitted with a JAK-400 coupler system. The tug is "married" to a 414(ft), 90,000(bbl), double hulled barge. The Penn No. 110. Constructed simultaneously in 2009, by Corn Island Shipyard of Lamar, Indiana for Penn Maritime Incorporated of Stamford, Connecticut.
Her raised aluminum tower and wheelhouse features a eye level of 51(ft). Her towing equipment consists of an "H" bitt, built by Thoma Sea. And, a JonRie InterTech capstan, manufactured by JonRie InterTech, of New Jersey, mounted on her stern.
In 2012, Penn Maritime Incorporated was acquired by the Kirby Corporation of Channelview, Texas. Where the tug retained her name.