Built in 1976, by Halter Marine Services Incorporated of New Orleans, Louisiana (hull #498) as the Abdon Martin Andrew Martin Sea Service Incorporated of Thibodaux, Louisiana.
In 1985, the tug was acquired by Harvey Gulf International Marine of New Orleans, Louisiana. Where she was renamed as the Harvey Trojan.
In 2014, Harvey Gulf International Marine's towing division was acquired by the Signet Maritime Corporation of Houston, Texas. Where the tug was renamed as the Signet Trojan.
In 2021, she was phased out of active service. And was "laid up" at Port Fourchon, Louisiana.
Powered by two, EMD 16-645 EC7 turbo charged diesel engines. With Reintjes reduction gears, at a ratio of 5.053:1. Turning two, Bird Johnson 117(in) by 114(in) fixed pitch, stainless steel propellers, mounted in kort nozzles. She is a twin screw tug, rated at 13,500 horsepower.
Her electrical service is provided by two, 100kW generator sets. The towing gear consists of an INTERcon double drum 225 towing winch, outfitted with 4,000(ft) of 2.25(in) towing wire on the primary drum, and 4,000(ft) of 2(in) wire on the secondary drum.