LCTC Ships Concept Design in the North Europe- Mediterranean Transport Scenario Focusing on Intact Stability Issues

Abstract

In late years, the size of RoRo cargo ships has continuously increased, leading to the so-called Large Car Truck Carriers (LCTC). The design of these vessels introduced new challenges that shall be considered during the ship design since the conceptual stage, which has a very strong impact on the technical and economic performances of the vessel during all its life-cycle. In this work, the concept design of an LCTC is presented based on Multi-Attribute Decision Making (MADM). A large set of design alternatives have been generated and compared in order to find out the most promising feasible designs. The proposed approach is based on a Mathematical Design Model (MDM) capable to assess all the main technical and economic characteristics for each design. Among the others, here focus has been done on the ship stability to assure the compliance with statutory rules within the MDM. A new stability metamodel has been developed capable to define the cross curves of stability at the concept design stage. The proposed MADM methodology has been applied to North Europe-Mediterranean transport scenario highlighting the impact of main particulars describing hull geometry on the technical and economic performances of an LCTC ship.

A Methodology for Simply Evaluating the Safety of a Passenger Ship Stability Using the Index for the Intact Stability Appraisal Module

“…The derivation of the correlation function of Angle maxGZ with a single variable of GM to calculate the angle of heel at the maximum point of the sinusoidal function of the GZ curve is unreliable. In the previous study, the method of the prediction of stability parameters according to ships' geometrical particulars such as the breadth, depth, and draught at the concept design stage were proposed [40]. It demonstrated the high coefficient of the determination between stability parameters and ships' geometrical particulars which are constant variables.…”

Strategies for Ship Decarbonisation: Technical Measure for Reducing Energy Efficiency Existing Ship Index

“…The EEXI calculation will be applied to the following existing ships [7] The aim of improved energy efficiency for reduced air emissions can notably be achieved through actions in two main directions that involve the vessel design within Multi-Attribute Decision-Making tools [8,9,10] and the vessel operation level [11,12,13]. New strategies and technologies aiming at reducing ships' fuel consumption are currently a priority for the industry, which shall search both to introduce innovative solutions and to innovate technologies currently employed.…”