Built in 1969, by the Bender Welding and Machine Company of Mobile, Alabama (hull #404) as the Scaup for Radcliff Materials Incorporated of Mobile, Alabama.

In 1986, the tug was acquired by the Dravo Basic Materials Company Incorporated of Mobile, Alabama. Where the tug retained her name.

In 1994, she was acquired by the Equipment Chartering Company Incorporated of Bay St. Louis, Mississippi. Where the tug retained her name.

In 1997, the tug was acquired by the Tesoro Marine Services Company of Houston, Texas. Where she was renamed as the Tesoro Admiral.

In 2003, she was acquired by Martin Midstream Partnership LP. of LaPorte, Texas. Where the tug was renamed as the Martin Admiral.

In 2016, the tug was acquired by Graestone Logistics LLC. of Murray, Kentucky. Where she was renamed as the Elin Gertrude.

Powered by two, Caterpillar D398 diesel engines. With Caterpillar reduction gears, at a ratio of 3.95:1. She was a twin screw towboat, rated at 1,800 horsepower.