Built in 1970, by Main Iron Works of Houma, Louisiana (hull #233) as the Gulf Seas for Gulf Mississippi Marine Incorporated of Houston, Texas.
In 1978, Gulf Mississippi Marine Incorporated became Gulf Fleet Marine Incorporated of Houston, Texas. Where the tug retained her name.
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 1992, the tug was acquired by Gulf Oceanic Marine Contractors Incorporated of Bourg, Louisiana. Where she was renamed as the Tenner C.
Rebuilt in 1994, she is powered by two, Caterpillar D-399 diesel engines. With Reintjes WAF reduction gears, at ratio of 5:1. Turning two, 98(in) by 63(in), cast steel, fixed pitch propellers. She is a twin screw tug, rated at 4,200 horsepower.
Her electrical service is provided by two, 75kW, Delco generator sets. Driven by two, GM 6-71 diesel engines. The tug's capacities are 58,000 gallons of fuel, 1,300 gallons of lube oil, 400 gallons of waste oil, and 10,000 gallons of ballast.
The towing equipment consists of a double drum, INTERcon DD 150 towing winch. With an Allison TRT 2421 transmission. Outfitted with 2,000(ft) of 1.75(in) towing wire on each drum.
(Captain Eric Takakjian, Kyle Stubbs)