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http://dx.doi.org/10.7837/kosomes.2017.23.2.139

Behavior Analysis and Control of a Moored Training Ship in an Exclusive Wharf  

Cho, Ik-Soon (Department of Ship Operation, Korea Maritime & Ocean University)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.23, no.2, 2017 , pp. 139-145 More about this Journal
Abstract
Recently, gusts, typhoon and tsunamis have been occurring more frequently around the world. In such an emergency situation, a moored vessel can be used to predict and analyze other vessel behavior, but if the mooring system is destroyed, marine casualties can occur. Therefore, it is necessary to determine quantitatively whether a vessel should be kept in the harbour or evacuate. In this study, moored ship safety in an exclusive wharf according to swell effects on motion and mooring load have been investigated using numerical simulations. The maximum tension exerted on mooring lines exceeded the Safety Working Load for intervals 12 and 15 seconds. The maximum bollard force also exceeded 35 tons (allowable force) in all evaluation cases. The surge motion criteria result for safe working conditions exceeded 3 meters more than the wave period 12 seconds with a wind speed of 25 knots. As a result, a risk rating matrix (risk category- very high risk, high risk and moderate risk) was developed with reference to major external forces such as wind force, wave height and wave periods to provide criteria for determining the control of capabilities of mooring systems to prevent accidents.
Keywords
Moored ship in an exclusive wharf; Mooring safety; Ship's movement; Swell; Risk matrix; Mitigation of movement;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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