The Design of Catenary Mooring Systems for Offshore Vessels

  • A. K. Brook
Part of the Lecture Notes on Coastal and Estuarine Studies book series (COASTAL, volume 12)


Catenary mooring systems are used for a number of offshore applications which may either be of a permanent or temporary nature. Permanent moorings are required for certain semi-submersible rigs which are used for production or accommodation platforms and occasionally for monohulls which are used for the storage of oil. In this case the mooring system needs to be able to survive extreme conditions due to wind and wave action. Temporary moorings are required for rigs or monohulls involved in a number of offshore activities including drilling, diving support and the transfer of oil to a tanker from another storage tanker. These applications often require that the vessel motion and heading variation should be restricted and the moorings may be used together with a dynamically positioned system. Typical mooring arrangements for monohulls and semi-submersibles are shown in Figures 15.1 and 15.2. Figure 15.3 shows a temporary mooring system for a ship where mooring lines are attached to permanently moored buoys and the ship’s anchors are also used.


Significant Wave Height Mooring Line Wind Gust Mooring System Wave Drift 


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  1. Aage, C., 1971 Wind Coefficients for Nine Ship Models. Hydro-Og Aerodynamisk Laboratorium Aerodynamics Section report no. A-3.Google Scholar
  2. Brook, A. K. and Byrne, D., 1983 The Dynamic Behaviour of single and multiple moored vessels. RINA Spring meeting.Google Scholar
  3. B.S.R.A., 1973 Research investigation for the improvement of ship mooring methods. Fourth report (Wind and current data for various classes of ship). Report NS386.Google Scholar
  4. Davenport, A. G., 1967 Gust loading factors. ASCF, Vol. 95, ST3.Google Scholar
  5. Gould, R. W. F., 1967 Measurement of wind forces on a series of models of merchant ships. NPL Aero Rep. 1233.Google Scholar
  6. Harris, R. I., 1973 The nature of wind. Paper no. 3 from Modem Design of Wind Sensitive Structures, CIRA.Google Scholar
  7. Newman, J. N., 1974 Second order slowly varying forces on vessels in irregular waves. Int. Symp.Dynamics of Marine Vehicles and Structures in Waves, London.Google Scholar
  8. Oil Companies International Marine Forum, 1977 Prediction of wind and current loads on VLCC’s.Google Scholar
  9. Ponsford, P. J., 1982 Wind-tunnel measurements of aerodynamic forces and moments on a model of a semi-submersible offshore drilling rig. NMI R34.Google Scholar
  10. Ratcliffe, A. T. and Clarke, D., 1981 Development of a Comprehensive simulation model of a single point mooring system. Trans. RINA.Google Scholar
  11. Wise, D. A. and English, J. W., 1975 Tank and wind tunnel tests for a drill-ship with dynamic positioning control. Offshore Technology Conferences.Google Scholar

Copyright information

© Springer-Verlag New York, Inc. 1985

Authors and Affiliations

  • A. K. Brook
    • 1
  1. 1.The British Ship Research AssociationWallsend, Tyne & WearUK

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