Excessive acceleration second generation intact stability criteria compared with cargo securing manual

Μαριόλης Κονιδάρης, Ιωάννης; Mariolis Konidaris, Ioannis

dc.contributor.author	Μαριόλης Κονιδάρης, Ιωάννης	el
dc.contributor.author	Mariolis Konidaris, Ioannis	en
dc.date.accessioned	2025-01-22T12:22:47Z
dc.date.available	2025-01-22T12:22:47Z
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/60922
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.28618
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ελλάδα	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/gr/	*
dc.subject	Υπερβολική Εγκάρσια Επιτάχυνση	el
dc.subject	Κριτήρια Ευστάθειας Πλοίου	el
dc.subject	Ship Stability Criteria	en
dc.subject	Excessive Lateral Acceleration	en
dc.title	Excessive acceleration second generation intact stability criteria compared with cargo securing manual	el
heal.type	bachelorThesis
heal.classification	Ship Stability	en
heal.language	en
heal.access	free
heal.recordProvider	ntua	el
heal.publicationDate	2024-09
heal.abstract	The rapid growth in global trade has led to the development of larger ships with significantly increased cargo capacity. While these advancements have improved economic efficiency worldwide, they have also introduced new challenges in ship stability and safety, particularly under heavy weather conditions. This thesis investigates the critical factors affecting ship stability, focusing on the phenomenon of excessive lateral acceleration and its impact on both the crew and cargo, with a special emphasis on container loss at sea. It examines, analyzes and compares the criteria developed by IMO concerning the lateral accelerations of a ship. The study begins with a brief overview of the history of stability theory, from the age of Archimedes to the present day. It highlights the evolution of the most important stability concepts, like the metacentric height and the righting lever. The study also reviews the initial criteria developed by IMO, focusing on the stability of the ship, which are the General Stability Criteria and the Weather Criterion. The Second Generation Intact Stability Criteria represent a substantial upgrade over the earlier existing criteria. It contains five different vulnerability criteria, one of which is the Excessive Acceleration criterion, which is a primary focus of this diploma thesis. Additionally, the study examines another IMO-developed criterion, the Cargo Securing Manual, especially focusing on the forces developed on the container lashings due to the ship's lateral movements. The regulatory framework of Level 1 and Level 2 of Excessive Acceleration criterion and the Cargo Securing Manual is then analyzed and explained. The study was motivated by the need to understand whether these two sets of criteria present conflicting requirements or overlaps. A code using the programming language of Wolfram Mathematica is developed, in order to perform the calculations contained in the two criteria. The calculations are conducted using a model ship for four different loading conditions. The results are then discussed, providing an insight on the relationship between the criteria. The differences and similarities of the two are noted. Various parameters are changed, to check which one affects the criteria the most. Finally, the questions of which criterion is stricter and if the application of only one of them seems sufficient, are answered.	el
heal.advisorName	Σπύρου, Κωνσταντίνος	el
heal.committeeMemberName	Θεμελής, Νικόλαος	el
heal.committeeMemberName	Αγγέλου, Εμμανουήλ	el
heal.academicPublisher	Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Ναυπηγών Μηχανολόγων Μηχανικών	el
heal.academicPublisherID	ntua
heal.numberOfPages	81 σ.	el
heal.fullTextAvailability	false