How a Fleet Improved CII Performance While
Achieving a 2.4-Year ROI
A recent project highlighted how a targeted energy-efficiency strategy can deliver measurable operational and compliance improvements across an entire fleet.
Following a tailored retrofit and optimisation assessment, three vessels achieved significant improvements in their Carbon Intensity Indicator (CII) ratings:
• One vessel improved from D to B
• Another moved from D to C
• A third advanced from C to A
These results were achieved through a combination of operational analysis and carefully selected efficiency technologies tailored to each vessel’s trading profile and fuel consumption patterns.
Across the fleet, the proposed package included an average of 12 energy-efficiency technologies per vessel, targeting both immediate fuel savings and long-term compliance performance.
Key project outcomes included:
- Average CAPEX per vessel: USD 999,453
- Average yearly bunker savings: USD 412,595
- Combined ROI: 2.4 years
Beyond the direct financial return, the project also significantly strengthened the fleet’s position ahead of tightening environmental regulations, including FuelEU Maritime and EU ETS exposure.
What makes this case particularly relevant is that it reflects a broader shift happening across the industry. Compliance is no longer being treated purely as a regulatory obligation. Increasingly, shipowners are using decarbonisation strategies as a way to improve operational efficiency, reduce fuel consumption, and strengthen long-term commercial resilience. The fleets acting early are already seeing measurable advantages:
• Lower fuel consumption
• Improved CII performance
• Reduced compliance exposure
• Greater operational flexibility
This project demonstrates what becomes possible when technical upgrades, compliance planning, and operational strategy are approached together rather than in isolation.
At Njord, we work closely with owners and operators to identify practical pathways toward compliance and efficiency improvements across their fleets.
