MOORING INSTRUMENTATION FOR LARGE MARINE TERMINALS

The forthcoming "TERMPOL" Code prepared by the Canadian Government recommends the provision of quick release mooring hooks and capstans for all future Canadian terminals handling ships in excess of 140,000 DWT. It further recommends that if severe wind, wave, current or ice action are a possibility, mooring hooks should be fitted with instrumentation to continuously monitor mooring line loads. Then, if the line loads become excessive, appropriate action can be taken. Mooring force measurements were first made by EXXON Engineering in Milford Haven U.K. as a means of balancing mooring systems for VLCC's subjected to severe loads imparted by passing ships. Similar applications exist at major terminals where extreme forces can be imposed on mooring lines and fenders not only from environmental sources, but also from operational procedures such as offloading or line tending. Over the past two years, an instrumentation system has been developed and installed at the Come-by-Chance oil terminal wharf. This instrumentation is designed to act both as an operational tool giving a constant readout of forces in mooring lines with an audio visual warning should line forces exceed specified limits, and also as a means of gathering engineering data on moored ship response and resultant forces for measured excitation forces. The purpose of this paper is to cover the experience gained in developing the instrumentation system, including technical details, problems encountered, and factors to be considered in future installations.

  • Supplemental Notes:
    • Proceedings of the 4th International Conference on Port and Ocean Engineering under Arctic Conditions (POAC 77), Newfoundland Memorial University, Canada, September 26-30, 1977.
  • Corporate Authors:

    POAC Conference 77

    ,    
  • Authors:
    • Mulcahy, M W
  • Publication Date: 1977

Media Info

  • Pagination: 8 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00167688
  • Record Type: Publication
  • Source Agency: Memorial University of Newfoundland, Canada
  • Report/Paper Numbers: Proceeding
  • Files: TRIS
  • Created Date: Jan 13 1978 12:00AM