ESI - Environmental Ship Index
Environmental Ship Index from NOx, SOx, CO₂ and OPS capability - major ports give port-due discounts for high ESI.
ESI score
85
Tier
Tier A - discount
Formula, assumptions, and limits
Rotterdam, Hamburg, Antwerp, Los Angeles offer 5-15 % port-due discount for ESI ≥ 30. Tier A (≥ 50) ships get additional rewards + marketing.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| Environmental Ship Index | - | IAPH ESI |