.eexi

The Energy Efficiency existing ship Index (EEXI) is a new IMO regulation that will apply to ships from 1st January 2023. It aims to reduce CO2 emissions of existing vessels by setting minimum requirements for technical efficiency.

The EEXI must be calculated for all cargo and cruise vessels above 400 GT under MARPOL Annex VI. A required EEXI is applicable for all cargo and cruise vessels above a certain size threshold, depending on the ship type.

The required EEXI is based on the EEDI reference lines. This, in most cases, is equal to the required EEDI in Phase 2 or 3.

The EEXI Technical File:

→ contains the details and processes to verify compliance with EEXI,

→It must be approved.

The International Energy Efficiency Certificate re-issued by the flag administration or Recognized Organization at the first annual survey after 1 January 2023 at the latest.

Required EEXI

The required EEXI value is determined

→ by the ship type,

→ the ship’s capacity and

→ principle of propulsion and

It is the maximum acceptable attained EEXI value.

The attained EEXI must be calculated for the individual ship, which falls under the regulation.

Recommendation for achieving the EEXI certification

The GHG reduction goal of the International Maritime Organization (IMO) is to reduce greenhouse gas emissions by 40 percent until 2030 and subsequently by another 50 percent until 2050. The shipping companies/ ship operators must have improvement measures to achieve these targets.

Here are the technical methods to achieve the EEXI norms:

● Engine power limitation: ~37%.

● Change in fuel type from marine diesel oil (MDO) to liquefied natural gas (LNG): 25%

● Propeller retrofit with MMG-Redesign propeller 10%

● Installation of a shaft generator: 5.6%