Maritime glossary · Energy Efficiency Existing Ship Index
EEXI
An IMO measure of an existing ship’s design energy efficiency, required to meet a CO2 standard since 2023.
Definition
The EEXI, in force from 2023, applies a design energy-efficiency standard to existing ships, the counterpart to the EEDI that already governs newbuildings. Each ship must show its design efficiency meets a required value for its type and size. Many older ships comply by fitting an engine power limiter that caps maximum output, trading a little speed for a passing index. EEXI is a one-time design check, unlike the operational CII, which is assessed every year.
How Vessel Hunter uses EEXI
Power limiters and efficiency retrofits driven by EEXI create work for yards and suppliers. Vessel Hunter helps target the affected fleet.
Related terms
- CIICarbon Intensity Indicator
An annual rating of how efficiently a ship carries cargo per mile, graded A to E under IMO rules.
- MARPOLMarine Pollution Convention
The IMO convention preventing pollution from ships: oil, chemicals, garbage, sewage, air emissions, sulphur.
- IMO 2020 Sulphur Cap
The MARPOL rule capping the sulphur content of marine fuel at 0.5% worldwide since 2020.
The bigger picture
EEXI is one piece of the commercial maritime picture Vessel Hunter pulls together for shipyards, suppliers, service providers, and port agents. Every vessel record bundles AIS, ownership, inspections, dry-dock history, casualty record, classification status, and a verified contact for the operator decision-maker behind the ship, so the team that reaches out first wins the work.
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