About Environmental Ship Index (ESI)
- ESI is a voluntary system that measures the environmental footprint of merchant vessels. It identifies ships that perform better than the International Maritime Organization’s (IMO) emission standards.
- ESI is published by the International Association of Ports and Harbors (IAPH).
- IAPH is a global trade association for seaports. It was founded in 1955 and is headquartered in Tokyo, Japan.
- ESI is administered by Green Award Foundation (a non-profit organization).
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