![]() C-Tractor 3 escorts the U.S. Navy ballistic-missile submarine USS Rhode Island (SSBN-740).  | |
| Class overview | |
|---|---|
| Builders | North American Shipbuilding Company | 
| Operators | Bay-Houston Towing Company | 
| Built | 1989–1993 | 
| In service | 1989–present | 
| Completed | 14 | 
| Active | 14 | 
| General characteristics | |
| Type | Z-drive tug | 
| Tonnage | 189 GT | 
| Length | 109 ft (33 m) | 
| Beam | 37 ft (11 m) | 
| Draft | 17 ft (5.2 m) | 
| Installed power | 4,000 shp (3,000 kW) | 
| Propulsion | Z-drive | 
| Speed | 12 knots (22 km/h; 14 mph) | 
| Bollard pull: | 110,000 lb (50,000 kg) | 
| Water cannons: | fore and aft, 3,500 US gal/min (790 m3/h) | 
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.[1] The lead ship of the class was William M , also known as C-Tractor 1[2][3]
C-Tractors measure 189 GT.[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. Her sister ships continue to be owned by Alpha Marine; six - C-Tractor 2, C-Tractor 3, C-Tractor 4, C-Tractor 5, C-Tractor 12, C-Tractor 13 - were at one point chartered to the United States Navy.[4][5]
C-Tractor 1
| History | |
|---|---|
| Name | 
  | 
| Owner | 
  | 
| Builder | North American Shipbuilding Company | 
| Yard number | 133 | 
| Launched | 1989 | 
| Identification | 
  | 
| Status | Active | 
C-Tractor 1 (William M) was built in 1989. In 2005 it was sold to Bay-Houston Towing Company and based in Corpus Christi, Texas.
References
- ↑ "North American Shipbuilding, Larose LA, North American Fabricators, Houma LA, and Gulf Ship, Gulfport MS". Shipbuilding History. Archived from the original on 6 January 2009.
 - 1 2 "Bay-Houston Towing Buys Tractor Tug". Maritime Reporter and Engineering News (Press release). 3 February 2005. Archived from the original on 25 October 2008. Retrieved 19 May 2009.
 - ↑ "Our boats". Bay-Houston Towing Company. Retrieved 7 July 2013.
 - ↑ "TC0108". United States Navy.
 
