C-Tractor is a class of fourteen tractor tugs built by North American Shipbuilding Company between 1989 and 1993 for Alpha Marine Services, a subsidiary of Edison Chouest Offshore.

[2] They are propelled by Z-drive pods, powered by twin EMD 16-645 engines rated at 4,000 shaft horsepower (3,000 kW).

The tugs mount fore and aft fire-fighting monitors, capable of pumping a total of 3,500 US gallons per minute (790 m3/h).

In 2005, C-Tractor 1 was sold to Bay-Houston Towing Company and based in Corpus Christi, Texas.

In 2005 it was sold to Bay-Houston Towing Company and based in Corpus Christi, Texas.