Built in 1983, by the Bollinger Machine Shop of Lockport, Louisiana (hull #164) as the Edmond A. Curole for Sea and Sea Marine Incorporated of Cut Off, Louisiana.
In 1993, the tug was acquired by the Dolphin Marine Company of Golden Meadow, Louisiana. Where she was renamed as the Dumar IV.
In 1995, she was acquired by Sea and Sea Marine Incorporated of Cut Off, Louisiana. Where the tug was renamed as the Rebekah Bruce.
In 2002, the tug was acquired Dolphin Tugs International Incorporated of Golden Meadow, Louisiana. Where she was renamed as the Dolphin IV.
In 2010, she was acquired by the Crosby Marine Transportation Company of Golden Meadow, Louisiana. Where the tug was renamed as the Crosby Admiral.
Powered by two, keel and grid cooled, Caterpillar 3606 diesel engines. With Reintjes WAV 2600 reduction gears, at a ratio of 5:1. Turning two, 117(in) by 117(in), fixed pitch propellers, mounted in kort nozzles. She is a twin screw tug, rated at 4,800 horsepower.
Her electrical service is provided by two, 75kW, Lima generator sets. Driven by two, Detroit 671 diesel engines. The tug's capacities are 96,346 gallons of fuel oil, 20,000 gallons of potable water, and 3,000 gallons of lube oil.
The towing equipment consists of an INTERcon DW200 towing winch. Outfitted with 2,400(ft) of 2.25(in) towing wire.