Built in 1975, by McDermott Shipyard Incorporated of Morgan City, Louisiana (hull #206) as the Robin IX for the Robin International Towing Company of Harvey, Louisiana.
In 1984, the tug was acquired by Crowley Marine Services Incorporated of San Francisco, California. Where she was renamed as the Sea Horse.
In 2016, the tug was acquired by the Sause Brothers Ocean Towing Company of Portland, Oregon. Where she was renamed as the Kekoa.
She was the fifth Sea Robin class tug for Crowley Marine Services Incorporated. The last four vessels in the series had raised bows.
Powered by two, Caterpillar 3606-3 diesel engines. With Lufkin reduction gears, at a ratio of 3.972:1. Turning two, four bladed, stainless steel, fixed pitch propellers. For a rated 5,000 horsepower.
Her electrical service is provided by two, Detroit 6-71 generator sets. The tug's capacities are 75,000 gallons of fuel oil, 4,104 gallons of lube oil, and 11,000 gallons of potable water.
The towing gear consists of an INTERcon DD-225, double drum, towing winch. Outfitted with 2,200(ft) of 2.25(in) towing wire on both drums.