Engine derating / EPL / ShaPoLi retrofit
vendor claim — not yet independently measuredLimiting the engine's maximum power (EPL/ShaPoLi) so it operates at a more efficient point and the attained CII improves. The only high-impact measure requiring neither drydock nor major hardware — but it caps the commercial top speed.
3–10%
CO₂ emissions reduction
€30k–150k
indicative capex band (vendor/literature prior)
1–3 days
no drydock needed
15,802
candidate vessels (fitment unverified — equipment data cannot prove absence)
Which ships it suits
- Segments: Bulk carrier, Chemical tanker, Combination carrier, Container ship, Gas carrier, General cargo ship, LNG carrier, Oil tanker, Passenger ship (Cruise Passenger ship), Refrigerated cargo carrier, Ro-pax ship, Ro-ro ship, Vehicle carrier
- Remaining service life: at least 3 years (payback must fit inside it)
Candidate vessels — worst CII band first
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Measured real-world outcomes
The reduction range above is a vendor claim. We continuously detect completed retrofits in shipyard-visit, equipment and EU MRV emissions data and measure the actual AER change. Measured results are published per measure once at least 30 controlled observations exist — until then, treat vendor ranges as ceilings: real-world delivery is consistently at or below the low end.