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Effects of coastal development on ship manoeuvring and navigation

Mohd. Noor, Hamzah and Maimun, Adi and Abd. Wahab, Ahmad Khairi and Ismail, Hadibah and Priyanto, Agoes and Muhammad, A. Haris (2006) Effects of coastal development on ship manoeuvring and navigation. In: Proceedings the 1st International Conference on Natural Resources Engineering and Technology INRET2006, 24-25 July 2006, Marriot, Putrajaya, Malaysia. (Unpublished)

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Abstract

Coastal development, such as land reclamation or dredging, usually changes the characteristics of the coastal waterway. A common phenomena due to restricted waterway is increase in ship resistance and reduction in manoeuvrability. The restricted water inflow under the vessel, result in increased water velocity under the hull. The increase of the inflow velocity at the rudder may result in the increase of the rudder normal force or create partial vacuum in the region near propeller and rudder. Consequently, manoeuvring of ships may become erratic in this condition. Standard for ship maneuvrabiity have been developed by International Maritime Organization (IMO) to ensure safe navigation/ship handling operation of ships. The standards provide criteria on the ship turning ability, yaw checking ability, course keeping ability and stopping ability. Where there is uncertainty in the behavior of the vessel especially in restricted waters, the use of numerical simulation for evaluating navigational risks is highly depended upon. In this paper, firstly, the effects on water depths and currents due to coastal development will be described. Secondly, using time domain simulation approach, the manoeuvring characteristics of vessel in two scenarios, i.e. deep and shallow water are discussed. Thirdly, actual simulations demonstrating the risks involved in navigating in a restricted waterway will be demonstrated

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Coastal engineering; navigation; restricted waterway; mathematical modeling; ship manoeuvring
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:3433
Deposited By: Ms Zalinda Shuratman
Deposited On:28 May 2007 02:36
Last Modified:01 Jun 2010 03:09

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