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OIO
Pictured as: the Western Ranger (Western) Photo by: Captain Russell Shrewsbury

Built in 1968, by Halter Marine Services Incorporated of New Orleans, Louisiana (hull #207) as the Oio for the Hawaiian Pineapple Company of Honolulu, Hawaii.

In 1991, the Hawaiian Pineapple Company was renamed as the Dole Food Company Incorporated of Honolulu, Hawaii.

In 1992, the tug was acquired by the Western Towboat Company of Seattle, Washington. Where she was renamed as the Western Ranger.

Originally powered by two, Caterpillar 398 diesel engines. The tug was rated at 1,600 horsepower. In 1992, the Western Towboat Company re powered the tug with two, Caterpillar 3516 Diesel engines. With Lufkin reduction gears, at a ratio of 7:1. Turning two, 100(in) by 100(in) stainless steel, fixed pitch, propellers mounted in Nautican kort nozzles, she is a twin screw tug, rated at 3,420 horsepower.

Her electrical service is provided by two, 75kW Caterpillar 3306 generator sets. The tug's capacities are 78,000 gallons of fuel, and 1,000 gallons of lube oil.

The tug's towing gear consists of a single drum, Nordic towing winch. Outfitted with 2,600(ft) 2.25(in) towing wire.
(Captain Ric Shrewsbury)


  • Vessel Name: OIO
  • USCG Doc. No.: 516924
  • Vessel Service: TOWING VESSEL
  • IMO Number: 7437214
  • Trade Indicator: Coastwise Unrestricted, Registry
  • Call Sign: WBN3008
  • Hull Material: STEEL
  • Hull Number: 207
  • Ship Builder: HALTER MARINE SERVICES
  • Year Built: 1968
  • Length: 101.2
  • Hailing Port: SEATTLE, WA.
  • Hull Depth: 11.4
  • Hull Breadth: 31.1
  • Gross Tonnage: 192
  • Net Tonnage: 130
  • Previous Vessel Names:
    OIO
  • Previous Vessel Owners:
    C.I.T. Lending, Leasing and Treasury Corp., WESTERN TOWBOAT COMPANY