Built in 1974, by McDermott Shipyard of Morgan City, Louisiana (hull #189) as the Robin VII 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 Prince.
She was the third Sea Robin class tug for Crowley Marine Services. The tug was originally constructed with a raised bow. However, it was cut down after she was acquired by Crowley Marine Services.
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 generators. 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 2,000(ft) of 2.25(in) wire on both drums.