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O.J. CENAC (1964)
Pictured as: the Nan Cenac (Cenac Towing Company) Photo by: Paul Sullivan

Built in 1964, by Main Iron Works Incorporated of Houma, Louisiana (hull #407) as the O.J. Cenac for the Cenac Towing Company Incorporated of Houma, Louisiana.

In 2002, the Cenac Towing Company renamed the tug as the Nan Cenac.

In 2008, the tug was acquired by Teppco Marine Services of Houma, Louisiana. Where she retained her name.

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

In 2015, the tug went out of documentation. Her current and, or final disposition is unknown.

Re powered in 1990, she was driven by two, Cummins KTA19-M2 diesel engines. With Twin Disc reduction gears, at a ratio of 5.92:1. Turning two, stainless steel, fixed pitch propellers. She was a twin screw tug, rated at 1,100 horsepower.


  • Vessel Name: O.J. CENAC (1964)
  • USCG Doc. No.: 294775
  • Vessel Service: TOWING VESSEL
  • Trade Indicator: Coastwise Unrestricted
  • Call Sign: WDE4246
  • Hull Material: STEEL
  • Hull Number: 128
  • Ship Builder: MAIN IRON WORKS INC
  • Year Built: 1964
  • Length: 73.5
  • Hull Depth: 10.6
  • Hull Breadth: 23.6
  • Gross Tonnage: 138
  • Net Tonnage: 94
  • Previous Vessel Names:
    O.J. CENAC, NAN CENAC, NAN CENAC, NAN
  • Previous Vessel Owners:
    CENAC TOWING CO INC, TEPPCO MARINE SERVICES LLC, ENTERPRISE MARINE SERVICES LLC, ENTERPRISE MARINE SERVICES LLC