Built in 1970, by McDermott Shipyard Incorporated of Morgan City, Louisiana (hull #160) as the Pathfinder for Crowley Marine Services Incorporated of San Francisco, California
She was the third Sea Swift class tug constructed by McDermott Shipyards for Crowley Marine Services Incorporated.
Designed by Naval Architect Phil Spaulding, the Sea Swift class was the first class of tugs constructed for Crowley Marine Services that were of a twin engine, and twin screw configuration. As well as a pilot house controlled engine room.
In 2012, the tug was acquired by the Stabberts Maritime Company of Seattle, Washington. Where the tug was renamed as the Ocean Pathfinder.
In 2013, she went on long term charter to the Foss Maritime Company of Seattle, Washington. Where she retained her name. The tug operates under the company's subsidy, the Young Brothers Company of Honolulu, Hawaii.
In 2017, the tug was acquired by Island Tug and Barge Company of Seattle, Washington. Where she was renamed as the Island Explorer.
Powered by two, sixteen cylinder, EMD 16-645-E-7 diesel engines. Turning two, cast steel, fixed pitch propellers. Turning two, cast steel, fixed pitch propellers. She was a twin screw tug, rated at 5,750 horsepower.
Her electrical service was provided by two, 90kW generator sets. The tug's capacities were 165,000 gallons of fuel.
The towing equipment consisted of a Markey TDSD-36, double-drum, towing winch. Outfitted with 2,200(ft) of 2.25(in) towing wire.