Built in 1967, by Zigler Shipyards Incorporated of Mermentau, Louisiana (hull #182) as the Sanford P. Dole for the Matson Navigation Company of Honolulu, Hawaii.
In 1983, 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 Niau.
In 2007, the Smith Maritime Company was acquired by the K-Sea Transportation Partnership Incorporated of East Brunswick, New Jersey. Where the tug retained her name.
In 2009, the tug went out of documentation. Her current and or final disposition is unknown. She was a twin screw tug, rated at 1,200 horsepower.