Built in 1974, by the Service Machine Shipyard Amelia, Louisiana (hull #114) as the Capt. Andy for the Fonteneau and Smith Boat Company of Morgan City, Louisiana.
In 1978, she was acquired by the Gulf Fleet Marine Corporation, of Houston, Texas. Where the tug was renamed as the Gulf Ranger.
In 1985, Zapata Marine Service, Gulf Fleet Marine Incorporated, and Jackson Marine Services merged to form Zapata Gulf Marine Service Incorporated of Houston, Texas. Where the tug retained her name.
In 1992, Zapata Gulf Marine Incorporated merged with Tidewater Marine Incorporated of New Orleans, Louisiana. Where the tug retained her name.
In 1995, the tug was acquired by the Sause Brothers Ocean Towing Company of Portland, Oregon. Where she was renamed as the Navajo.
Powered by two, EMD 16-645-E5 diesel engines. With Falk 3040 MR reduction gears, at a ratio of 4:962:1. Turning two, four bladed, 138(in) by 90(in), right and left inboard turning, stainless steel, fixed pitch propellers. For a rated 5,700 horsepower.
Her electrical service is provided by two, John Deere 6068-75 generators, with Marathon ends. The tug's capacities are 150,000 gallons of fuel, 1,400 gallons of lube oil, and 12,000 gallons of water.
The towing equipment consists of an INTERcon, double drum, DD 225 towing winch. Outfitted with 5,000(ft) of 2.25(in) towing wire on the primary drum. And, 2,400(ft) of 2.25(in) towing wire on the secondary drum. Driven by a single, GM 6-71 diesel engine, with an Allison 5631, three speed, transmission.
With a 30 horsepower, McElroy MSW AW 528H capstan mounted on her bow With a gypsy head, windlass.
(Bruce Fizell, Captain Eric Takakjian, Captain Dave Miner, Jason Purkey, Kyle Stubbs)