Home Search Links About Us Updates Login
OFFSHORE SOVEREIGN

Built in 1977, by Eide Contracting of Hoylandsbygd, Norway as the Karl Oskar for the Wirens Company Rederi of Sweden.

In 1978, the tug was acquired by the Bagger and Bugsier Company of East Germany. Where she was renamed as the Sturmvogel.

In 1980, she was acquired by the Arned Company of Vlaardingen, Holland. Where she was renamed as the Triumph.

In 1985, the tug was acquired by the Petersen and Alpers Company of Hamburg, Germany. Where she was renamed as the Hanseat.

In 1989, she was sold and renamed as the Zamtug IV.

In 1990, the tug was acquired by McAllister Towing Limited Montreal. A subsidiary of the McAllister Brothers Towing Company of New York, New York. Where she was renamed as the Offshore Sovereign. However, the tug was operated under a Liberian flag.

In 1998, the tug was acquired by the Offshore Express Company of Houma, Louisiana. Where the tug retained her name. Although, she was operated under a Peruvian flag.

In 2019, she was acquired by Doig Marine SAC of Piura, Peru. Where the tug retained her name.

Powered by two, EMD 20-645-E3 diesel engines. She is a twin screw tug, rated at 6,600 horsepower.

(Mac Mackay)


  • Vessel Name: OFFSHORE SOVEREIGN
  • Vessel Service: TOWING VESSEL
  • IMO Number: 7611731
  • Trade Indicator: Coastwise Unrestricted
  • Call Sign: OA4202
  • Hull Material: STEEL
  • Ship Builder: EIDE CONTRACTING
  • Year Built: 1989
  • Length: 162.3
  • Hull Depth: 19.6
  • Hull Breadth: 39
  • Gross Tonnage: 852
  • Net Tonnage: 759
  • Previous Vessel Names:
    Karl Oskar, Sturmvogel, Triumph, Zamtug IV, OFFSHORE SOVEREIGN
  • Previous Vessel Owners:
    Wirens Rederi, Bagger and Bugsier, Arned Company, Petersen and Alpers, McAllister Towing Limited Montreal, OFFSHORE SPECIALTY FABRICATORS,