On the Energy Efficiency Design Index of Ro-Ro passenger and Ro-Ro cargo ships

Abstract

This study proposes alternative formulations of the ship-specific correction factor (f_jRoRo) pertaining to Ro-Ro cargo and Ro-Ro passenger ships, as defined in the Energy Efficiency Design Index equation according to the International Maritime Organization Resolution MEPC 245(66). The alternative formulations were derived by studying a large sample of Ro-Ro cargo ships and Ro-Ro passenger ships, built between the years 1990 and 2012. The estimation of ships’ resistance and powering was conducted by application of Holtrop’s method. The obtained formulae’s exponent values were compared with the corresponding ones from latest International Maritime Organization studies on Energy Efficiency Design Index and they appear to better represent the energy efficiency and environmental impact of the operating fleet of Ro-Ro cargo and Ro-Ro passenger ships. Derived formulae may also be used in the frame of parametric design optimization of Ro-Ro ships.

Keywords

Energy Efficiency Design Index Ro-Ro cargo ships Ro-Ro passenger ships environmental impact parametric ship design optimization

Get full access to this article

View all access options for this article.

References

International Maritime Organization. Third IMO GHG study 2014. Executive summary and final report, MEPC 67/6/INF.3, June 2014. London: International Maritime Organization.

International Maritime Organization. Resolution MEPC 245(66): 2014 guidelines on the method of calculation of the attained Energy Efficiency Design Index (EEDI) for new ships. MEPC 66/21/Add.1, Annex 5, 4 April 2014. London: International Maritime Organization.

International Maritime Organization. Comments on the method to include the Ro-Ro cargo and Ro-Ro passenger ship types into the IMO energy efficiency regulatory framework as proposed in MEPC 64/4/14 and MEPC 65/4/4. MEPC 65/4/18, 8 March 2013. London: International Maritime Organization (submitted by Denmark and Japan).

International Maritime Organization. Proposal for the inclusion of the Ro-Ro cargo and Ro-Ro Passenger ship types into the energy efficiency regulatory framework. MEPC 64/4/14, 29 June 2012. London: International Maritime Organization (submitted by Germany, Sweden and the Community of European Shipyards’ Association (CESA)).

International Maritime Organization. Revised proposal for the inclusion of the Ro-Ro cargo and Ro-Ro Passenger ship types into the IMO energy efficiency regulatory framework. MEPC 65/4/4, 8 February 2013. London: International Maritime Organization (submitted by Germany, Sweden, Community of European Shipyards Associations (CESA) and INTERFERRY).

IHS Fairplay (eds) World Shipping Encyclopedia, version 12.01, October 2011, https://www.ihs.com/products/maritime-world-shipping-encyclopedia.html

Holtrop

A statistical re-analysis of resistance and propulsion data. Int Shipbuild Prog 1984; 31: 272–276.

Kristensen

HO.

Analysis of a new proposal (MEPC 64/4/14) to include the Ro-Ro cargo and Ro-Ro passenger ship types in the energy efficiency regulation framework. DTU Mechanical Engineering Report, Technical University of Denmark, Lyngby, November 2012.

Liu

Papanikolaou

Zaraphonitis

Prediction of added resistance of ships in waves. Ocean Eng 2011; 38: 641–650.

10.

Liu

Papanikolaou

Zaraphonitis

. Practical approach to the added resistance of a ship in short waves. In: Proceedings of the twenty-fifth international ocean and polar engineering conference, Kona, Big Island, HI, USA, 21–26 June 2015. Mountain View, CA: International Society of Offshore and Polar Engineers (ISOPE).

11.

International Maritime Organization. International convention on tonnage measurement of ships. London: International Maritime Organization, 1969.

12.

International Maritime Organization. Resolution MEPC 231(65): guidelines for calculation of reference lines for use with the energy efficiency Design Index (EEDI). MEPC 65/22, Annex 14, May 2013. London: International Maritime Organization.

13.

International Maritime Organization. MARPOL 73/78, Consolidated ed. London: International Maritime Organization, 2013.

14.

International Maritime Organization. Resolution MEPC 251(66): amendments to regulations 2, 13, 19, 20 and 21 and the supplement to the IAPP certificate under MARPOL annex VI and certification of dual-fuel engines under the NOX technical Code 2008. MEPC 66/21, Annex 12, 2014. London: International Maritime Organization.

15.

Papanikolaou

Ship design: methodologies of preliminary design. Dordrecht: Springer, 2014.

16.

Alisafaki

. Research on alternative equation formulations in estimating the Energy Efficiency Design Index (EEDI) for Ro-Ro cargo ships & Ro-Ro/passenger ships. MSc Thesis, Ship Design Laboratory, National Technical University of Athens, Athens, 2013 (in Greek), http://dspace.lib.ntua.gr/handle/123456789/8528?mode=full

17.

Papanikolaou

Holistic ship design optimization. J Comput-Aided Des 2010; 42(11): 1028–1044.