Built in 1999, by Nichols Brothers Boatbuilders of Freeland, Washington (hull #131) as the Scout for Crowley Marine Services Incorporated of San Francisco, California.
Designed by Naval Architects, Guido Perla and Associates of Seattle, Washington. She was the fifth Harbor class tractor tug designed, and constructed Crowley Marine Services Incorporated.
The Harbor class tugs were designed specifically, for ship assist, and escort duties. She features a hydrofoil shaped skeg, that provides for greatly improved steering, control, and seakeeping. It allows the vessel to run at high speeds in the skeg-first direction. In addition the hydrodynamics of the hull result in increased tons of steering, and braking force. Which are available to assist, or control a vessel at higher speeds.
In 2024, the tug was scrapped at Seattle, Washington.
Powered by two, Caterpillar 3516-B diesel engines. With two, Voith-Schneider cycloidal drives. She was rated at 4,800 horsepower.