Built in 1981, by McDermott Shipyard Incorporated of Amelia, Louisiana (hull #258) as the Valiant for the Bulkfleet Marine Corporation of Houston, Texas.
In 1984, the Bulkfleet Marine Corporation was consolidated into the Signet Maritime Corporation of Houston, Texas. Where the tug retained her name.
In 2004, she was acquired by Penn Maritime Incorporated of Stamford, Connecticut. Where the tug retained her name.
The tug was modified with a Bludworth coupler system. Ocean Tug and Barge Engineering of Milford, Massachusetts designed the overall installation, and worked with J. Cook Marine of Bradford, Rhode Island on the design of the connector unit itself.
The tug was acquired, along with her single hulled barge the Bulkfleet Pennsylvania. Which was constructed in 1981, by McDermott Industries of Amelia, Louisiana for the Bulkfleet Marine Corporation of Houston, Texas. The barge was extensively rebuilt after the acquisition, which included the addition of a double hull.
This work included the redesign of the stern skegs on the barge, to accommodate the Bludworth pads. And, the modification of the tug structure to accommodate the Bludworth sidepad units. The barge's movable skegs were replaced with fixed skegs, and a large bar was set into the head of the notch for the Bludworth coupler mounted on the bow of the tug, to clamp on to.
The completed, double hulled barge, measuring 190,000(bbls), at 473(ft), by 84(ft), by 42(ft) was renamed as the Everglades.
In 2012, Penn Maritime Incorporated was acquired by the Kirby Corporation of Channelview, Texas. Where the tug retained her name.
Powered by two, six cylinder, Mak Maschinenbau GMBH 6MU55IAK diesel engines. Turning two, cast steel, fixed pitch propellers. She is a twin screw tug, rated at 8,000 horsepower.
The tug's electrical service is provided by two, 190kW, Marathon generator sets. With a third, auxillary 190kW generator set. Her capacities are 213,187 gallons of fuel.