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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, the tug was sold. Where she was renamed as the Zamtug IV.

In 1990, the tug was passed to 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. And, the tug was reflagged in Liberia.

The tug returned to Halifax en route to Sheet Harbour, Nova Scotia. She served a regular barge service with paper products, to the United States East coast as far south as Pensacola, Florida.

In 1998, the tug was acquired by the Offshore Express Company of Houma, Louisiana. Where the tug retained her name. And, she operated under a Peruvian flag. Powered by two, EMD 20-645-E3 diesel engines. She is no longer listed in documentation. Her current, and or, final disposition is unknown.
(Mac Mackay)

  • USCG Doc. No.: N/A
  • Vessel Service: TOWING VESSEL
  • IMO Number: 07611731
  • Trade Indicator: Coastwise Unrestricted
  • Call Sign: OA4202
  • Hull Material: STEEL
  • Ship Builder: EIDE CONTRACTING
  • Year Built: 1989
  • Length: 162.3
  • Hailing Port: Peru
  • Hull Depth: 19.6
  • Hull Breadth: 39
  • Gross Tonnage: 852
  • Net Tonnage: 759
  • Owner:
    115 Menard Road
    Houma LA 70363-7517, USA.
  • 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,