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The role of navigational risk assessment during ship's manoewring in limited waters

Galor W.

Journal of KONES

2009

Vol. 16, No. 2

117-124

The main purpose of navigation is a safe and efficient leading of the ship between various points. This proces s should be safely and efficiently. The process of safe movement of the ship in the area is called safe navigation. These areas are called as limited waters. The manoeuvring of ships on each water area is connected with the risk of accident, which is unwanted event in results of this can appear the losses. Among water areas there are those where ship manoeuvring is restricted more than in other sea areas. These areas are called as limited waters. They are mainly characterised a relatively high number of navigation accidents. The assessing of navigation safety requires the application of proper criteria, measures and factors. The criteria make it possible to estimate the probability of navigational accident for certain conditions. The safety of ship's movement can be identified as admissible risk, as a combination of probability of accident and losses. The overall risk of ship movement in water area in then the sum of these single risks depehd on the under keel clearance, distance to navigational obstruction, air drought, collision with other floating craft and berthing energy.Such way permits to assess of safety of ship 's manoeuvring by quantity. The paper present the method of risk assessment for ship's in limited waters by analysis of basic elements restricted its movement.