Built in 2005, by Main Iron Works Incorporated of Houma, Louisiana (hull #421) as the Norman P. Proehl for Horizon Maritime LLC. of Houston, Texas.

In 2008, the tug was acquired by the Cenac Towing Company Incorporated of Houma, Louisiana. Where she was renamed as the Norman Cenac.

In 2009, she was acquired by Enterprise Marine Services Incorporated of San Antonio, Texas. Where the tug was renamed as the Norman.

Powered by two, Cummins KTA50 diesel engines. With Reintjes reduction gears, at a ratio of 5.913:1. She is a twin screw towboat, rated at 3,200 horsepower.