Χαμηλή ταχύτητα πλεύσης : τεχνο - οικονομική και περιβαλλοντική αξιολόγηση
KeywordsΤεχνοοικονομική αξιολόγηση ; Εμπορευματοκιβώτια ; Περιβαλλοντικά οφέλη ; CO2 ; SOX ; Χαμηλή ταχύτητα πλεύσης
Since 2009 that the slow steaming procedure has been applied, many maritime corporations and ship owners have established this sailing method in order to reduce fuel consumption and air pollution which cause global warming. On the other hand some are opposed to this sailing method due to the augmentation of the duration of traveling but mainly because of the problems caused to the main engines of the ship because of their working in slower rotations than those predicted by the designer. In this paper the techno-economical and environmental benefits of slow steaming will be analyzed and ways of slow steaming of merchant ships will be presented, mechanical problems which are caused by the slow steaming method will be referred to and new technologies -with which problems caused by slow steaming in ship engines are resolved so that a ship can sail in slow speed without problems- will be presented. Finally we will try to estimate the cost of slow steaming and the savings thanks to it in order to end up with the clear economic results through the study of relations of slow streaming and the use of fuel and the relation of fuel consumption and the speed for certain routes, certain kinds of ships and in various sailing speeds.