Smaller General Cargo vessels often visit smaller ports, rivers and locks and are often dimensioned accordingly. Here Wagenborg’s MV Lingeborg, 7300tDW, entering the port of Le Tréport in France.


Proposed changes to EEDI framework for small general cargo ships


The Centre for Maritime Technology and Innovation, part of the Holland Shipbuilding Association and the Royal Association of Netherlands Shipowners, asked MARIN and Conoship to investigate the cause of the large scatter in the Energy Efficiency Design Index


(EEDI) values of small general cargo ships. Report explains. Jan Jaap Nieuwenhuis & Wieger Duursema (Conoship) / Michiel Verhulst, m.verhulst@marin.nl


B


ased on the outcome of the study additional correction factors were developed which will lead to a


fairer inclusion of small general cargo ships within the EEDI regulatory framework. The results of the study formed the basis of a submission by the Dutch government in the 64th session of the IMO’s Maritime Environmental Protection Committee (MEPC) in London last October.


20 report


In January, the new EEDI regulations in- cluded in MARPOL Annex VI, which aims to reduce CO2


emissions from ships, will be


enforced. For each new ship this index is calculated by dividing emissions by the benefit to society, expressed as transport capacity times speed of the vessel. The obtained EEDI value should be lower than a required value from a baseline, which will be reduced over time in three phases.


Several ship types, which have their own reference lines, are defined. The reference line is determined by the regression of EEDI values, calculated from data obtained from the IHS/Fairplay database. For general cargo vessels, the capacity used is the deadweight at the summer draught. In comparison to other ship types, smaller general cargo ships particularly, have a poor correlation of EEDI values versus deadweight. This is caused


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