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2.1 Reduction of GHG emissions

Energy Efficiency Design Index

Tripartite 18-19 September 2009

Pierre C. Sames

Chairman IACS EG/ENV

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Contents

EEDI verification

two stages

reference speed

electrical power

table

EEDI baselines

guidelines

correction factors

EEDI safety impact

minimum speed

Outlook

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Introduction

The EEDI guidelinesconsolidate the results of

the discussions from five

sessions.

The formulation for the

EEDI has matured and itcan now be thoroughly

tested, at least for the

dominant ship types.

However, issues related to

verification and applicationremain open and these

issues are discussed in the

following.

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Two-stage EEDI verification (1/2)

The two-stage verification process for the EEDI wasconfirmed and agreed.

In the view of IACS, the first phase of theverification process should be limited to anexamination of input parameters, without a formal

approval.

data examination of input parameters, to checkcompliance with EEDI requirements beforeproceeding with the construction,

sea trials verification to formally verify the shipsEEDI.

It is underlined that some EEDI elements cannot andshould not be checked before construction andduring sea trials. In this sense, guidance is needed.

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Two-stage EEDI verification (2/2)

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EEDI verification what if?

When a vessel fails to meet the required EEDI,enforced speed reduction is the most powerful

measure.

EEDI for typical 5000 TEU vessel (65.000 DWT)

024

68

101214161820

15 17 19 21 23 25

Speed (knots)

gCO2/(t*nm)

EEDI attained

EEDI required

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EEDI verification reference speed

The estimate of the reference speed during designis performed with established methods and tools

such as speed-power tables.

The EEDI condition (full load for most ship types -

at 75% MCR) likely cannot be checked during sea

trials. Therefore, an appropriate method (e.g. ISO

15016) needs to be agreed.

Speed power curves of sea trial and full load

conditions and an outline of the estimation method

of power curves should be provided by theshipbuilder. This is highly sensitive data!

IACS shares CESA concerns that sensitive data

requires efficient measures of know-how protection

in the context of the EEDI verification.

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EEDI verification electrical power

balance table

Verification of the electrical power balance isrequired for vessels with diesel-electric propulsion

and when a direct calculation of auxiliary power is

performed.

CLIA provided a draft guidance for the verification

of this table in MEPC 59/4/28.

IACS has started contributing to the development of

such guidance.

A workshop with industry is being organised by

IACS to align state of the art approval with EEDI-

related verification requirements.

This workshop is planned for beginning of

November 2009, at IACS offices in London.

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EEDI baselines

The baseline format wasconfirmed.

The [WG] Chairmansuggested that calculationfor obtaining the parameterof a and c in the formulashould be conducted in a

transparent manner withinthe Organization.

A guidance for computingbaselines is needed.

IACS pointed to relevantissues when baselines arecomputed (MEPC 59/4/44). Inparticular, contact to theoriginal data provider LRFPshould be established toensure correct use of data.

Key results of sampling for EEDI baseline

input data (100 samples)

50

60

70

80

90

100

0 10 20 30 40

percent difference

nosamp

les

(cumulat

ed)

Installed main power

Capacity

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EEDI correction factors for CSR

China suggested to develop correctionfactors for CSR bulk carriers (MEPC

59/4/20).

IACS agrees that with application of CSR,

hull steel weight would increase and CSR

vessels will be penalised when a baseline

is derived without taking CSR vessels into

account.

IACS is currently collecting relevant

information and is open in principle to a

possible co-sponsoring of a submission.

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EEDI minimum speed

With an EEDI implemented, IACS isconcerned that installed main engine

power might be reduced to a minimum.

It was asked twice recently (ITF and ICS)

which minimum speed (and associated

minimum installed power) would guarantee

safe operation even in adverse conditions.

IACS recommends that such reserves andmargins are credited and appropriate

correction factors are included in the EEDI

to take account of these.

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Outlook

IACS continuescontributing to the

development of the EEDI.

IACS also sees the industry

challenge to meet a

possible future emission

target.