An ice-free, single-point mooring buoy, which can handle supertankers up to 350,000 dwt, which might be usable offshore on the Alaskan North Slope, will be installed for Irving Oil Co. at Mispec Point, St. John's Harbor, New Brunswick, Can. The new design, manufactured by I.H.C. Holland, features a patented heated cap which uses hot circulating oil to keep ice from forming on the buoy. The 41 ft dia heater cap is fitted with two diesel-electric generators, two oil heaters, and oil-circulation pumps. A solid-state control and telemetry unit transmits functional data to the shore station. The system is designed to hold the temperature of the cap at 0 deg-2 deg F above freezing by pumping oil at up to 480 deg F through 7250 ft of heating pipe. The hull of the buoy is divided into watertight compartments and filled with 24,710 cu ft of polyurethane foam to ensure continued flotation of the terminal in case of hull damage.

  • Availability:
  • Corporate Authors:

    Petroleum Publishing Company

    211 South Cheyenne, P.O. Box 1260
    Tulsa, OK  United States  75221
  • Publication Date: 1969-8-18

Media Info

  • Pagination: p. 44
  • Serial:
    • Oil and Gas Journal
    • Volume: 67
    • Issue Number: 33
    • Publisher: PennWell Publishing Company
    • ISSN: 0030-1388

Subject/Index Terms

Filing Info

  • Accession Number: 00056662
  • Record Type: Publication
  • Source Agency: American Petroleum Institute
  • Files: TRIS
  • Created Date: Jul 22 1974 12:00AM