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Simulation of Load Distribution along a Quay during Unparallel Berthing Manoeuvres
1 Maritime University of Szczecin, Szczecin, Poland
ABSTRACT: The marine berths are normally secured for safety reasons with a system of fenders. Their role is to absorb and dissipate the kinetic energy of a ship coming into a contact with a berth, so the structural integrity of both the berth and ship's hull is preserved. Normally the combination of a number and the single fender strength indicate the ship's maximum allowable lateral speed in parallel berthing conditions (of course, with a safety margin frequently taken into account). More or less directly and/or approximately, this is also a general selection method for fender systems. The main objective of this conference contribution, as inspired by some suggestions and needs within a domestic marine society since the author's developed and successfully implemented fender effect in ship manoeuvring simulation, is to analyse the local loads in a particular fender around the region of contact during an oblique berthing. Various conditions of ship's lateral and angular velocities are tested. The results are compared with some practical shiphandling tips, as to be found in the literature, leading to a necessity of revision of the existing practice. The presented investigations are believed to be very helpful also for fender system designers.
REFERENCES
Artyszuk, J. 2003. Fender Impact Effect upon Ship Manoeuvring Motion - a Dynamic Approach. In Proc. of X International Conference 'Marine Traffic Engineering', Maritime University of Szczecin, Scientific Bulletin no. 70: 25-36.
Artyszuk, J. 2005. Simulation of a Spring Line Application to Enhance Berthing/Unberthing Manoeuvres. In C. Guedes Soares et al. (eds), Maritime Transportation and Exploitation of Ocean and Coastal Resources, vol. 1: 17-25; IMAM 2005. London: Balkema/Taylor&Francis.
Fontijn, H.L. 1988. Fender Forces in Ship Berthing. Part 1 and 2. Ph.D. Thesis, Delft: University of Technology.
Magda, W. 2006. Absorbtion of Ship Kinetic Energy by Berth Fenders. Inżynieria Morska i Geotechnika 27(5): 306-311 (in Polish).
Vasco Costa, F. 1964. The Berthing Ship. The Effect of Impact on the Design of Fenders and Berthing Structures. London: Foxlow Publications Ltd..
Vasco Costa, F. 1968. Berthing Manoeuvres of Large Ships. The Dock and Harbour Authority XLVIII(569-March): 351-358.
Vasco Costa, F. 1987. The Probabilistic Approach in the Selection of Ropes and Fenders. In E. Bratteland (ed.), Advances in Berthing and Mooring of Ships and Offshore Structures: 323-327; Proc. of the NATO Advanced Study Institute on Advances in Berthing and Mooring of Ships and Offshore Structures, Trondheim, 7-17 Sep 1987. Dordrecht: Kluwer Academic Publishers.
Citation note:
Artyszuk J.: Simulation of Load Distribution along a Quay during Unparallel Berthing Manoeuvres. TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation, Vol. 4, No. 3, pp. 273-278, 2010

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