Built in 1978, by Halter Marine Services Incorporated of Moss Point, Mississippi (hull #535) as the Savannah for Gonsoulin Enterprises Incorporated of Missouri City, Texas.
She was later sold. Where she was renamed as the Lafayette.
In 1988, the vessel was sold as Cape Lookout.
In 1991, she was acquired by the Smith Maritime Company Honolulu, Hawaii. Which was a part of the Hawaiian Interisland Towing Company of Honolulu, Hawaii. Where she was renamed as the Nunui.
In 2007, the Smith Maritime Company was acquired by the K-Sea Transportation Partnership of East Brunswick, New Jersey. Where the vessel retained her name.
In 2011, the K-Sea Transportation Partnership was acquired by the Kirby Corporation of Channelview, Texas. Where the vessel retained her name.
Powered by two, sixteen cylinder, EMD 16-645-C-E-2 diesel engines. Turning two, cast steel, fixed pitch propellers. She is a twin screw Offshore Supply Vessel, rated at 3,900 horsepower.
Her electrical service is provided by two, 99kW generator sets. The vessel's capacities are 80,572 gallons of fuel.