Built in 1966, by St. Charles Steel Works Incorporated of Thibodaux, Louisiana (hull #64) as the Molly Lee for the Molly Lee Towing Company of Cut Off, Louisiana.
In 1969, the tug was acquired by T and L Boat Rental Incorporated of Buras, Louisiana. Where she was renamed as the Miss B.
In 1997, she was acquired by River Towing Incorporated of Empire, Louisiana. Where the tug was renamed as the Capt. Ken.
In 2000, the tug was acquired by Tiger Towing Incorporated of Berwick, Louisiana. Where she was renamed as the Sarah Grace.
In 2014, she was acquired by Central Boat Rentals Incorporated of Morgan City, Louisiana. Where the tug was renamed as the Miss Wrenn.
In 2020, the tug was acquired by Gulf Coast Tugs Incorporated of LaRose, Louisiana. Where the tug was renamed as the Robert J. Eymard.
Originally powered by two, GM 12V-71 diesel engines. With Twin Disc reduction gears, at a ratio of 5:1 for a rated 800 horsepower. In 2020, the tug was repowered with two, Caterpillar 3406C diesel engines. With Twin Disc reduction gears, at a ratio of 6:1. Turning two, 59(in) by 59 (in), stainless steel fixed pitch propellers. She is a twin screw tug, rated at 2,000 horsepower.
Her electrical service is provided by two, 45kW John Deere generator sets. The tug's capacities are 10,500 gallons of fuel, 60 gallons of lube oil, 60 gallons of hydraulic oil, and 7,000 gallons of potable water.
The towing equipment consists of two, 40 ton, Nabrico winches mounted on the stern.