During the emptying and filling of ballast tanks at sea, risks concerning ship safety may arise. The phenomenon of ship rolling during ballast water exchange using the sequential method has been analyzed. A reduction of the negative phenomenon occurring during the exchange by changing the ship’s course and/or speed has been proposed.Sailing in ballast and the exchange of ballast water are situations frequently encountered in the operation of various types of seagoing vessels. For economic and ecological reasons, ballast water exchange is most often carried out during the ship’s voyage on the open sea in various weather conditions. The significant mass of ballast water and the limited capacity of ballast pumps mean that this is an operation lasting many hours. In practice, there is often a need to carry out this operation in weather conditions that are unfavorable from the point of view of ship safety. Sailing in a ballast condition in bad weather is already a threat to the ship’s safety. This threat increases significantly during the complex process of emptying and filling the tanks.
Issues regarding the ballast water exchange process are so important that they have been in the area of interest of the IMO’s SLF subcommittee for a number of years. In one of the IMO documents, i.e., MSC/Circ. 1145 dated 13.12. (…)
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Source: Logistics Magazine