Ship Universe Maritime Tool

EEXI Calculator

Estimate attained EEXI, required EEXI and ship compliance under MARPOL Annex VI. Model original or engine-limited propulsion power, reference speed, specific fuel consumption, auxiliary power and ship-type reduction requirements.

IMO EEXI Screening Tool
Attained EEXI
Technical CO2 intensity at reference power and speed
Required EEXI
EEDI reference line reduced by the MARPOL ship-type factor Y
Power Limitation
PME can reflect an overridable engine or shaft power limitation

Ship Particulars

Required EEXI is calculated automatically from ship type and size.

DWT

Propulsion Power & Speed

Enter total installed main-engine MCR. If a certified power limitation is modeled, enter the limited MCR as well.

kW
kW
PME = lower of 83% of limited MCR or 75% of original MCR.
kn
g/kWh

Auxiliary Power & Fuel

Use verified values where available. MEPC.350(78) permits 190 g/kWh main and 215 g/kWh auxiliary approximations when qualifying SFC data are unavailable.

kW
g/kWh
t/t fuel

Ship & Required EEXI

Advanced mode adds a manual required-EEXI override and screening correction inputs.

DWT
Useful when a verifier has already established the ship's required EEXI.

Main Propulsion

kW
kW
kn
g/kWh
t/t fuel

Auxiliary & Verified Adjustments

The full statutory EEXI formula can include ship-specific correction factors and efficiency-technology terms. Enter only values supported by the ship's technical file.

kW
g/kWh
t/t fuel
Screening input for applicable verified capacity / correction-factor effects. Leave 1 when not used.
gCO2/h
Optional aggregate credit for approved energy-efficiency technology terms.

EEXI Compliance Results

Simple technical screening

Enter ship data
Enter ship type, capacity, engine power, Vref, SFC and auxiliary power to estimate attained and required EEXI.
Planning estimate only. Official attained EEXI calculations can require approved speed-power curves, certified or verifier-confirmed SFC, applicable correction factors, energy-efficiency technology terms, propulsion-system-specific treatment and an approved EEXI Technical File. This simplified calculator is not suitable for direct certification of diesel-electric, turbine or hybrid propulsion unless the applicable IMO methodology is separately reflected. Confirm the final calculation with the Administration, recognized organization or other authorized verifier.
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