“Analysis of Motion in Single-Point Mooring Systems”
Authors: Hans R. Sørheim,Affiliation: Christian Michelsen Research
Reference: 1980, Vol 1, No 3, pp. 165-186.
Keywords: Modelling, stability analysis, ship hydrodynamics, simulation, offshore loading
Abstract: A mathematical model of the slow motions of ships in single-point moorings is described. The model is used for analysis of stability of equilibrium positions. An analytical criterion for stability relating main system parameters is derived under simplifying assumptions. A numerical example with a 100 000 dwt tanker showed that the effect of wind and current are of equal importance with respect to system stability, and astern propulsion is generally required to avoid stable oscillations. Stability problems in waves have not been found. The effects of time varying excitations are discussed and illustrated by simulation.
PDF (4909 Kb)
DOI: 10.4173/mic.1980.3.2DOI forward links to this article:
| [1] A.R. Halliwell and R.E. Harris (1988), doi:10.1016/S0141-1187(88)80034-8 |
| [2] Fotis A. Papoulias and Michael M. Bernitsas (1986), doi:10.1080/02681118608806021 |
| [3] Michael M. Bernitsas and Fotis A. Papoulias (1986), doi:10.1016/S0141-1187(86)80031-1 |
| [4] F. Aghamohammadi and J.M.T. Thompson (1990), doi:10.1016/S0141-1187(05)80015-X |
| [5] D. Claude, A. Glumineau and C. Moog (1985), doi:10.1109/CDC.1985.268798 |
| [6] Catherine J. Hollyhead, Nicholas C. Townsend and James I.R. Blake (2017), doi:10.1016/j.oceaneng.2017.09.045 |
| [7] Xu Zhang, Wenchi Ni, Liping Sun and Wei Zhang (2020), doi:10.1080/17445302.2020.1786236 |
| [8] Dapeng Zhang, Bowen Zhao, Yong Bai and Keqiang Zhu (2022), doi:10.3390/jmse10111596 |
[1] ABKOWITZ, M.A. (1964). Lectures on ship hydrodynamics, Steering and manoeuvrability. Hydro- and Aerodynamic Lab. Report No. Hy-5.
[2] BERG, T.E., UTNES, T. (1978). A note on added mass calculation in connection with linear theory for manoeuvring ship, Division of Marine Hydrodynamics, The Norwegian Institute of Technology.
[3] BERLEKOM, W.B. VAN (1975). Effects of propeller loading on rudder efficiency, Proceedings from 4th Ship Control Symposium, Haag.
[4] BERLEKOM, W.B. VAN, GODDARD, T.A. (1972). Manoeuvring of large tankers, Trans. SNAME, 80.
[5] BERLEKOM, W.B. VAN, TRÄGÅRDH, P., DELLHAG, A. (1974). Large tankers - wind coefficients and speed loss due to wind and sea, RINA, pp. 41-58.
[6] BRUMMER, G.M.A., VOORDE, C.B. VAN DE, WIJK., W.R. VAN, GLANSDORP, C.C. (1972). Simulation of the steering and manoeuvring characteristics of a second generation container ship, Netherlands Ship Research Centre TNO, Report No. 170s.
[7] CRANE, C.L. (1966). Studies of ship manoeuvering: ´Response to propeller and rudder actions´, Stevens Institute of Technology, Report No. AD 706 571.
[8] ENGLISH, J.W. (1970). Moving ships sideways, Shipping World and Shipbuilder, April, pp. 549-555.
[9] FALTINSEN, O.M., KJÆRLAND, O., LIAPIS, N., WALDERHAUG, H. (1979). Hydrodynamic analysis of tankers in single-point-mooring systems, Proceedings from Behaviour of Offshore Structures, Trondheim.
[10] FALTINSEN, O.M., LØKEN, A.E. (1978). Drift forces and slowly varying forces on ships and offshore structure in waves, Norwegian Maritime Res., 1.
[11] GERRITSMA, T., BEUKELMAN, W., GLANSDORP, C.C. (1974). The effects of beam on the hydrodynamic characteristics of ship hulls, Proceedings from Symposium on Naval Hydrodynamics, London.
[12] GLANSDORP, C.C. (1975). Ship type modelling for a training simulator, Proceedings from 4th Ship Control Systems Symposium, Haag, 4, 117.
[13] HARING, R.E. (1976). Single-point tanker mooring measurements in the North Sea, Proceedings from Offshore Technology Conference, Houston, paper no. 2711.
[14] HSU, F.H., BLENKARN, K. A. (1970). Analysis of peak mooring forces caused by slow vessel drift oscillations in random seas, Proceedings from Offshore Technology Conference, Houston, paper no. 1159.
[15] KAPTEIJN, S.A.T. (1976). Offshore loading systems, Offshore North Sea conference, Stavanger.
[16] KOONCE, K.T. (1976). Technology needs for deepwater operations, Proceedings from Behariour of Offshore Structures, Trondheim.
[17] LENIHAN, J.H. (1975). The role of single point moors in the North Sea, Society of Petroleum Engineers of AIME, SPE 5261.
[18] MAARI, R. (1975). Offshore Mooring Terminals, Monaco: Single Buoy Moorings Inc.
[19] MINKENBERG, A.L., GIE, T.S. (1974). Will the ´regular wave concept´ yield meaningful motion predictions for offshore structures?, Proceedings front Offshore Technology Conference, Houston, paper no. 2040.
[20] MUGA, B.J., FREEMAN, M.A. (1977). Computer simulation of single point moorings, Proceedings front Offshore Technology Conference, Houston, paper no. 2829.
[21] NEWMAN, J.N. (1977). Marine Hydrodynamics, Cambridge: MIT.
[22] NORRBIN, N.H. (1971). Theory and observations on the use of a mathematical model for ship manoeuvring in deep and confined waters, The Swedish State Shipbuilding Experimental Tank, Göteborg, Publication No. 68.
[23] OCIMF (1976). Prediction of Wind and Current Loads on VLCC´s, Oil Company International Marine Forum.
[24] OORTMERSEN, G. VAN, REMERY, G.F.M. (1973). The mean wave, wind and current forces on offshore structures and their role in the design of mooring systems, Proceedings from Offshore Technology Conference, Houston, paper no. 1741.
[25] OWEN, D.G., LINFOOT, B.T. (1976). The development of mathematical models of single-point mooring installations, Proceedings from Offshore Technology Conference, Houston, paper no. 2490.
BibTeX:
@article{MIC-1980-3-2,
title={{Analysis of Motion in Single-Point Mooring Systems}},
author={Sørheim, Hans R.},
journal={Modeling, Identification and Control},
volume={1},
number={3},
pages={165--186},
year={1980},
doi={10.4173/mic.1980.3.2},
publisher={Norwegian Society of Automatic Control}
};