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2 Journal of Polish CIMAC

2 2010

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Ship's safety hazards during replacement of ballasts at sea

Chorab P., Szelangiewicz T.

Journal of Polish CIMAC

2010

Vol. 5, no 2

53-64

The sequential method of ballast water replacement at sea during the ship voyage is commonly used on board the ships. However, the successive emptying and filling of ballast tanks causes the occurrence of hazards to ship’s safety. The article presents the calculation results of ship roll motions, pitch motions, slamming and emergence of propeller during ballast replacement at different sea states. It has been shown at which stages of ballast replacement specific hazards arise and how they could be avoided or minimized, especially under severe weather conditions.

Influence of weather conditions on the ship's safety during replacement of ballast water

Chorab P., Szelangiewicz T.

Journal of Polish CIMAC

2010

Vol. 5, no 2

41-51

The sequential replacement of ballast water at sea during the ship voyage is commonly used on board the ships. However, the successive emptying and filling of ballast tanks causes the occurrence of hazards to ship’s safety. The article presents hazards to ship’s safety and the calculations have been performed of the most dangerous hazards in respect of ship operation, for the m/v „Orla” ship on calm water. The obtained service conditions of the ship during replacement of ballasts shall be the basis for calculating the ship’s safety hazards on waves.