Built in 1977, by Quality Shipyards of Houma, Louisiana (hull #138) as the Gulf Whale for Tidewater Marine of New Orleans, Louisiana.
The tug was later acquired by Gulf Coast Transit of Tampa, Florida. Where she was renamed as the Janet Graham.
She was then acquired by Express Marine of Camden, New Jersey where she was renamed as the Express Explorer . She serviced the Domino Sugar plant in Brooklyn, New York. When the Domino Sugar plant closed; the contract the Express Explorer operated under ended.
The tug was then acquired by Dann Ocean Towing of Tampa, Florida. Where she was renamed as the Allie B.
She is a model bow, twin screw ABS A-1 Towing service, maltese cross classed tug. Powered by two EMD 12-645-E6 diesel main engines with REINTJES WAV 1850 reduction gears turning via 9(in) shafts; two 108(in) diameter by 108(in) fixed pitch five bladed stainless steel propellers mounted in kort nozzles for a rated 3,000 horsepower.
Her electrical service is provided by two 75-KW generators driven by two Detroit 6V71 engines. The tug's capacities are 96,000 gallons of fuel oil, 225 gallons of hydraulic oil, 4,185 gallons of lube oil, 6,925 gallons of water.
Her towing gear consists of an INTERcon DD-200 double drum towing winch outfitted with 2,000(ft) of 2(in) towing wire, with a secondary drum equipped 2000(ft) of 2(in) towing wire. The towing winch features a line pull of 200,000 lbs. It is driven by a Detroit 8V71 engine, she also features sheaves and fairleads for notch towing.