Abstract:
This research examines ship behavior under wave action, focusing on vertical displacement positions and the occurrence of roll instability in various parts of the vessel. The crew's concerns about wellbeing and the impact on navigation and efficiency, especially in difficult weather, are significant. The oscillation of a ship, caused by heaving and pitching, leads to increased vertical movements. Compared to other motions, rolling is a more complex motion and can exert greater forces on the ship. However, the angle at which the ship rolls is not restricted. The research focuses on the discovery of flooding and stability loss, which are significant challenges faced by nations like Bangladesh that extend river routes with dangerous turbulence. Vessel capsizing has been a consistent issue over the years. To address these concerns, the study establishes threshold levels in vessel sections based on different wave conditions. Thus, the study is expected to provide valuable insights regarding wave-related incidents. The linear strip theory used in a commercial platform allows researchers to consider the shape, geometry, dimensions, and unique characteristics of a vessel when compared to a Bangladeshi-type passenger ship. Additionally, the review incorporates the Belgian Royal Decree of 2007, which pertains to ships navigating rivers and seas, adding a legal perspective. This dilemma arises from the absence of criteria based on wave conditions in the maritime laws of Bangladesh, necessitating the careful combination of available data within the comprehensive management regime. The chosen wave conditions for the research align with the stability rules of Bangladesh and the parameters defined by the Royal Decree. The ship stability regulations in Bangladesh are currently based on deterministic uncontrolled conditions required by the International Maritime Organization (IMO). However, IMO also encourages ship builders to consider probabilistic floatability assessment to address the stochastic nature of water waves. It is recommended to include both probabilistic stability assessments and deterministic regulations.
