Definition of Capacity in the EEDI for Ro-Ro Passenger Ships

Ančić, Ivica and Šestan, Ante (2016) Definition of Capacity in the EEDI for Ro-Ro Passenger Ships. = Definition of Capacity in the EEDI for Ro-Ro Passenger Ships. In: SNAME Maritime Convention 2016, 01-05.11.2016., Bellevue, Washington, SAD.

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Official URL: https://bib.irb.hr/prikazi-rad?&rad=855358

Abstract

It has been five years since the inclusion of chapter 4 to MARPOL Annex VI and the introduction of the International Energy Efficiency Certificate (IEE Certificate). To obtain it, every ship has to satisfy the Energy Efficiency Design Index (EEDI) requirements. It requires that for every new ship the Attained EEDI has to be calculated and not higher than the Required EEDI calculated as a function of capacity. For most ship types the deadweight (DWT) proved to be appropriate measure of capacity, but not for ro-ro passenger ships. The capacity for these ships can be defined by several parameters besides DWT, like: GT, lane meters, number of cabins, number of passengers etc. All these parameters indicate primarily the volume the ship can transport, and not the mass. But two years ago, the EEDI was modified in order to include the ro-ro passenger ships. Even though many studies concluded that the DWT was not appropriate measure of capacity for ro-ro passenger ships, the definition of the Required EEDI based on the DWT was still adopted. Also two new correction factors fjRoRo and fcRoPax were included in the calculation of the Attained EEDI. Their role was to ensure at least some level of statistical correlation when applying the EEDI for the current ro-ro passenger ships fleet. Even though the current approach has some limited statistical correlation, it does not evaluate fairly ships capacity. In this paper the current ro-ro passenger ships fleet is analyzed and a new approach is proposed in which the capacity is defined in GT. This would then allow a fair comparison between different ro-ro passenger ships.

Item Type: Conference or Workshop Item (Lecture)
Keywords (Croatian): EEDI; ro-ro passenger ships; energy efficiency; CO2 emission; environmental impact
Subjects: TECHNICAL SCIENCE > Shipbuilding
TECHNICAL SCIENCE > Mechanical Engineering
TECHNICAL SCIENCE > Basic technical sciences
Divisions: 600 Department of Naval Engineering and Marine Technology > 650 Chair of Marine Machinery and System Design
Indexed in Web of Science: No
Indexed in Current Contents: No
Date Deposited: 13 Mar 2017 13:44
Last Modified: 16 Jan 2018 09:16
URI: http://repozitorij.fsb.hr/id/eprint/7557

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