Built in 1975, by Bollinger Machine Shop of Lockport, Louisiana (hull #91) as the Captain Martin.
In 1985, she was sold. Where she was renamed as the Danielle.
However, later that year, the tug was acquired by Sun Oil Transport of Marcus Hook, Pennsylvania. Where she was renamed as the Yobouca Sun.
In 1986, she was sold. Where she was renamed as the Yobouca.
In 1999, she was acquired by Hornbeck Offshore Transportation of Covington, Louisiana. Where she was renamed as the Yobouca Service.
In 2005, the tug was acquired by Dann Ocean Towing of Tampa, Florida. Where she was renamed as the Thomas Dann.
She is a twin screw, model bow ABS international load line certified tug. Powered by two EMD 12-645-E6 diesel engines. With Reintjes WAV 1850 reduction gears at a ratio of 4:1. Turning via two 8.75(in) shafts two four bladed, stainless steel, open 94(in) by 76(in) fixed pitch, propellers for a rated 3,000 horsepower.
Her electrical service is provided by two 75kw generators driven by two GM 6V71 diesel engines. The tug's capacities are 68,000 gallons of Fuel Oil, 65 gallons of Hydraulic Oil, 700 gallons Lube Oil, 9,600 gallons of Potable Water.
The tug's towing gear consists of a double drum INTERcon DD 175 towing winch outfitted with 2,000(ft) of 2(in) diameter stainless steel towing cable. Her "suitcase" drum is equipped with 1,000(ft) of 1 1/4 diameter towing wire.