The EEDI (Energy Efficiency Design Index) rating number is a specific figure representing a ship's energy efficiency, expressed as grams of carbon dioxide (CO2) emitted per ship's capacity-mile.
Essentially, the EEDI provides a quantifiable measure of how environmentally friendly a ship's design is. A lower EEDI indicates a more energy-efficient design, meaning the ship emits less CO2 for each unit of cargo it carries over a specific distance.
Here's a breakdown of the key aspects:
- Units: Grams of CO2 / (Ship's Capacity * Nautical Mile)
- Interpretation: Lower EEDI = Better Energy Efficiency
- Calculation: Based on a formula that considers technical design parameters of the ship, including engine power, speed, and capacity. This calculation is defined by the International Maritime Organization (IMO).
- Purpose: To establish minimum energy efficiency levels for new ships, encouraging the development and adoption of more efficient technologies and designs.
The EEDI is a vital tool in the effort to reduce greenhouse gas emissions from the shipping industry. By setting mandatory efficiency standards, it promotes innovation and helps move towards a more sustainable future for maritime transport.
