Built in 1978, by Main Iron Works of Houma, Louisiana (hull #339) as the Vigilant for Dixie Offshore Transport Incorporated of Houston, Texas.
In 1998, the tug was acquired by the Kirby Corporation of Channelview, Texas. Where she retained her name.
In 2016, she was acquired by the Dann Marine Towing Company of Chesapeake City, Maryland. Where she was renamed as the Pearl Coast.
Powered by two, sixteen cylinder, EMD 16-645 E7A diesel engines. With Falk 3548 MRPF/MRSF reduction gears, at a ratio of 5.275:1. Turning two, 126(in) by 162.82(in), cast steel, fixed pitch propellers, mounted in kort nozzles. For a rated 5,600 horsepower.
Her electrical service is provided by two, 100kW, Delco generator sets. Driven by two, Detroit Diesel 2-V8-71 diesel engines. The tug's capacities are 173,194 gallons of fuel, 2,253 gallons of lube oil, 3,878 gallons of waste oil, and 4,938 gallons of water.
The towing equipment consists of a single drum, Markey towing winch. Outfitted with 2000(ft) of 2.25(in) towing wire.
(Nick Karpin, Lisa Kolibabek)