Study on mooring safety for a ship with constant tension mooring system

  • JIA De-jun ,
  • LI Fan-chun
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  • (Transportation Equipment and Ocean Engineering College, Dalian Maritime University, Dalian 116026, China)

Received date: 2015-12-25

  Revised date: 2016-02-07

  Online published: 2016-02-07

Abstract

In order to study the influence of different mooring system on mooring safety for the ship in port, taking the total length of 210 m container ship mooring operation as an example, the time domain response analysis method was used to calculate the maximum horizontal displacement and the maximum cable force respectively for traditional mooring system and constant tension mooring system under the joint action of environmental load, mooring cable force and pressure from fenders, and the ship displacement and cable force were compared in different mooring system and same environmental load, and the influence of constant tension mooring system on mooring safety was studied, and the applicable environmental load for constant tension mooring system was determined. Results show that the maximum horizontal displacement and maximum cable force increase with significant wave height. In addition, the constant mooring system can limit cable force in a safe range. When direction of environmental load is perpendicular and point to harbor, constant tension mooring system can limit horizontal displacement in a smaller range than normal mooring system as time goes by. When direction of wave load is point to harbor by an angle of 45° or 135° with prow, the constant tension mooring system cannot limit the horizontal displacement effectively.

Cite this article

JIA De-jun , LI Fan-chun . Study on mooring safety for a ship with constant tension mooring system[J]. Journal of Dalian Maritime University, 2016 , 42(3) : 1 -8 . DOI: 10.16411/j.cnki.issn1006-7736.2016.03.001

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