Appendix 4 – EEDI Calculation Examples for Use of Dual Fuel Engines
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Statutory Documents - IMO Publications and Documents - Circulars - Marine Environment Protection Committee - MEPC.1/Circular.866 – 2014 Guidelines on the Method of Calculation of the Attained Energy Efficiency Design Index (EEDI) for New Ships, as Amended... - Appendix 4 – EEDI Calculation Examples for Use of Dual Fuel Engines

Appendix 4 – EEDI Calculation Examples for Use of Dual Fuel Engines

 Case 1: Standard Kamsarmax ship, one main engine (MDO), standard auxiliary engines (MDO), no shaft generator:

S/N Parameter Formula or Source Unit Value
1 MCRME MCR rating of main engine kW 9930
2 Capacity Deadweight of the ship at summer load draft DWT 81200
3 Vref Ships speed as defined in EEDI regulation kn 14
4 PME 0.75 x MCRME kW 7447.5
5 PAE 0.05 x MCRME kW 496.5
6 CFME CF factor of Main engine using MDO - 3.206
7 CFAE CF factor of Auxiliary engine using MDO - 3.206
8 SFCME Specific fuel consumption of at PME g/kWh 165
9 SFCAE Specific fuel consumption of at PAE g/kWh 210
10 EEDI ((PME x CF ME x SFCME)+(PAE x CFAE x SFCAE)) / (Vref x Capacity) gCO2/tnm 3.76

Case 2: LNG is regarded as the "primary fuel" if dual-fuel main engine and dual-fuel auxiliary engine (LNG, pilot fuel MDO; no shaft generator) are equipped with bigger LNG tanks:

S/N Parameter Formula or Source Unit Value
1 MCRME MCR rating of main engine kW 9930
2 Capacity Deadweight of the ship at summer load draft DWT 81200
3 Vref Ships speed as defined in EEDI regulation kn 14
4 PME 0.75 x MCRME kW 7447.5
5 PAE 0.05 x MCRME kW 496.5
6 CFPilotfuel CF factor of pilot fuel for dual fuel ME using MDO - 3.206
7 CFAE Plilotfuel CF factor of pilot fuel for Auxiliary engine using MDO - 3.206
8 CFLNG CF factor of dual fuel engine using LNG - 2.75
9 SFCMEPilotfuel Specific fuel consumption of pilot fuel for dual fuel ME at PME g/kWh 6
10 SFCAE Pilotfuel Specific fuel consumption of pilot fuel for dual fuel AE at PAE g/kWh 7
11 SFCME LNG Specific fuel consumption of ME using LNG at PME g/kWh 136
12 SFCAE LNG Specific fuel consumption of AE using LNG at PAE g/kWh 160
13 VLNG LNG tank capacity on board m3 3100
14 VHFO Heavy fuel oil tank capacity on board m3 1200
15 VMDO Marine diesel oil tank capacity on board m3 400
16 ρLNG Density of LNG kg/m3 450
17 ρHFO Density of heavy fuel oil kg/m3 991
18 ρMDO Density of Marine diesel oil kg/m3 900
19 LCVLNG Low calorific value of LNG kJ/kg 48000
20 LCVHFO Low calorific value of heavy fuel oil kJ/kg 40200
21 LCVMDO Low calorific value of marine diesel oil kJ/kg 42700
22 KLNG Filling rate of LNG tank - 0.95
23 KHFO Filling rate of heavy fuel tank - 0.98
24 KMDO Filling rate of marine diesel tank - 0.98
25 fDFgas - 0.5068
26 EEDI (PME x (CF Pilotfuel x SFCME Pilotfuel)+(PAE x CF Pilotfuel x SFCAE Pilotfuel + CF LNG x SFCAE LNG)) / (Vref x Capacity) gCO2/tnm 2.78

Case 3: LNG is not regarded as the "primary fuel" if dual-fuel main engine and dual-fuel auxiliary engine (LNG, pilot fuel MDO; no shaft generator) are equipped with smaller LNG tanks:

S/N Parameter Formula or Source Unit Value
1 MCRME MCR rating of main engine kW 9930
2 Capacity Deadweight of the ship at summer load draft DWT 81200
3 Vref Ships speed as defined in EEDI regulation kn 14
4 PME 0.75 x MCRME kW 7447.5
5 PAE 0.05 x MCRME kW 496.5
6 CFPilotfuel CF factor of pilot fuel for dual fuel ME using MDO - 3.206
7 CFAE Plilotfuel CF factor of pilot fuel for Auxiliary engine using MDO - 3.206
8 CFLNG CF factor of dual fuel engine using LNG - 2.75
9 CFMDO CF factor of dual fuel ME/AE engine using MDO - 3.206
10 SFCMEPilotfuel Specific fuel consumption of pilot fuel for dual fuel ME at PME g/kWh 6
11 SFCAE Pilotfuel Specific fuel consumption of pilot fuel for dual fuel AE at PAE g/kWh 7
12 SFCME LNG Specific fuel consumption of ME using LNG at PME g/kWh 136
13 SFCAE LNG Specific fuel consumption of AE using LNG at PAE g/kWh 160
14 SFCME MDO Specific fuel consumption of dual fuel ME using MDO at PME g/kWh 165
15 SFCAE MDO Specific fuel consumption of dual fuel AE using MDO at PAE g/kWh 187
16 VLNG LNG tank capacity on board m3 600
17 VHFO Heavy fuel oil tank capacity on board m3 1800
18 VMDO Marine diesel oil tank capacity on board m3 400
19 ρLNG Density of LNG kg/m3 450
20 ρHFO Density of heavy fuel oil kg/m3 991
21 ρMDO Density of Marine diesel oil kg/m3 900
22 LCVLNG Low calorific value of LNG kJ/kg 48000
24 LCVHFO Low calorific value of heavy fuel oil kJ/kg 40200
25 LCVMDO Low calorific value of marine diesel oil kJ/kg 42700
26 KLNG Filling rate of LNG tank - 0.95
27 KHFO Filling rate of heavy fuel tank - 0.98
28 KMDO Filling rate of marine diesel tank - 0.98
29 fDFgas - 0.1261
30 fDFliquid 1- fDFgas - 0.8739
31 EEDI (PME x (CF Pilotfuel x SFCME Pilotfuel)+(PAE x CF Pilotfuel x SFCAE Pilotfuel + CF LNG x SFCAE LNG)) / (Vref x Capacity) gCO2/tnm 2.78

Case 4: One dual-fuel main engine (LNG, pilot fuel MDO) and one main engine (MDO) and dual-fuel auxiliary engine (LNG, pilot fuel MDO, no shaft generator) which LNG could be regarded as "primary fuel" only for the dual-fuel main engine:

S/N Parameter Formula or Source Unit Value
1 MCRMEMDO MCR rating of main engine using only MDO kW 5000
2 MCRMELNG MCR rating of main engine using dual fuel kW 4000
3 Capacity Deadweight of the ship at summer load draft DWT 81200
4 Vref Ships speed kn 14
5 PMEMDO 0.75 x MCRMEMDO kW 3750
6 PMELNG 0.75 x MCRMELNG kW 3000
7 PAE 0.05 x (MCRMCRMEMDO + MCRMELNG) kW 450
8 CFPilotfuel CF factor of pilot fuel for dual fuel ME using MDO - 3.206
9 CFAE Plilotfuel CF factor of pilot fuel for Auxiliary engine using MDO - 3.206
10 CFLNG CF factor of dual fuel engine using LNG - 2.75
11 CFMDO CF factor of dual fuel ME/AE engine using MDO - 3.206
12 SFCMEPilotfuel Specific fuel consumption of pilot fuel for dual fuel ME at PME g/kWh 6
13 SFCAE Pilotfuel Specific fuel consumption of pilot fuel for dual fuel AE at PAE g/kWh 7
14 SFCDF LNG Specific fuel consumption of dual fuel ME using LNG at PME g/kWh 158
15 SFCAE LNG Specific fuel consumption of AE using LNG at PAE g/kWh 160
16 SFCME MDO Specific fuel consumption of single fuel ME at PME g/kWh 180
17 VLNG LNG tank capacity on board m3 1000
18 VHFO Heavy fuel oil tank capacity on board m3 1200
19 VMDO Marine diesel oil tank capacity on board m3 400
20 ρLNG Density of LNG kg/m3 450
21 ρHFO Density of heavy fuel oil kg/m3 991
22 ρMDO Density of Marine diesel oil kg/m3 900
23 LCVLNG Low calorific value of LNG kJ/kg 48000
24 LCVHFO Low calorific value of heavy fuel oil kJ/kg 40200
25 LCVMDO Low calorific value of marine diesel oil kJ/kg 42700
26 KLNG Filling rate of LNG tank - 0.95
27 KHFO Filling rate of heavy fuel tank - 0.98
28 KMDO Filling rate of marine diesel tank - 0.98
29 fDFgas - 0.5195
31 EEDI (PMELNG x (CF Pilotfuel x SFCME Pilotfuel + CF LNG x SFCDF LNG ) + PMEMDO x CF MDO x SFCME MDO + PAE x (CFAE Pilotfuel x SFCFAE Pilotfuel + CF LNG x SFCAE LNG)) / (Vref x Capacity) gCO2/tnm 3.28

Case 5: One dual-fuel main engine (LNG, pilot fuel MDO) and one main engine (MDO) and dual-fuel auxiliary engine (LNG, pilot fuel MDO, no shaft generator) which LNG could not be regarded as "primary fuel" for the dual- fuel main engine:

S/N Parameter Formula or Source Unit Value
1 MCRMEMDO MCR rating of main engine using only MDO kW 5000
2 MCRMELNG MCR rating of main engine using dual fuel kW 4000
3 Capacity Deadweight of the ship at summer load draft DWT 81200
4 Vref Ships speed kn 14
5 PMEMDO 0.75 x MCRMEMDO kW 3750
6 PMELNG 0.75 x MCRMELNG kW 3000
7 PAE 0.05 x (MCRMCRMEMDO + MCRMELNG) kW 450
8 CFPilotfuel CF factor of pilot fuel for dual fuel ME using MDO - 3.206
9 CFAE Plilotfuel CF factor of pilot fuel for Auxiliary engine using MDO - 3.206
10 CFLNG CF factor of dual fuel engine using LNG - 2.75
11 CFMDO CF factor of dual fuel ME/AE engine using MDO - 2.75
12 SFCMEPilotfuel Specific fuel consumption of pilot fuel for dual fuel ME at PME g/kWh 6
13 SFCAE Pilotfuel Specific fuel consumption of pilot fuel for dual fuel AE at PAE g/kWh 7
14 SFCDF LNG Specific fuel consumption of dual fuel ME using LNG at PME g/kWh 158
15 SFCAE LNG Specific fuel consumption of AE using LNG at PAE g/kWh 160
16 SFCDF MDO Specific fuel consumption of dual fuel ME using MDO at PME g/kWh 185
17 SFCME MDO Specific fuel consumption of single fuel ME at PME g/kWh 180
18 SFCAE MDO Specific fuel consumption of AE using MDO at PAE g/kWh 187
19 VLNG LNG tank capacity on board m3 600
20 VHFO Heavy fuel oil tank capacity on board m3 1200
21 VMDO Marine diesel oil tank capacity on board m3 400
22 ρLNG Density of LNG kg/m3 450
23 ρHFO Density of heavy fuel oil kg/m3 991
24 ρMDO Density of Marine diesel oil kg/m3 900
25 LCVLNG Low calorific value of LNG kJ/kg 48000
26 LCVHFO Low calorific value of heavy fuel oil kJ/kg 40200
27 LCVMDO Low calorific value of marine diesel oil kJ/kg 42700
28 KLNG Filling rate of LNG tank - 0.95
29 KHFO Filling rate of heavy fuel tank - 0.98
30 KMDO Filling rate of marine diesel tank - 0.98
31 fDFgas - 0.3462
32 fDFliquid 1- fDFgas - 0.6538
33 EEDI (PMELNG x (CF Pilotfuel x SFCME Pilotfuel + CF LNG x SFCDF LNG ) + fDFliquid x CFMDO x SFCDF MDO)) + PMEMDO x (CFMDO x SFCME MDO + PAE x (fDFgas x (CFAE Pilotfuel x SFCAE Pilotfuel + CF LNG x SFCAE LNG) + fDFliquid x CFMDO x SFCAE MDO)) / (Vref x Capacity) gCO2/tnm 3.54
Parent topic: MEPC.1/Circular.866 – 2014 Guidelines on the Method of Calculation of the Attained Energy Efficiency Design Index (EEDI) for New Ships, as Amended (Resolution MEPC.245(66), as Amended by Resolutions MEPC.263(68) and MEPC.281(70)) – (30 January 2017)
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