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Bulbous bow reprofiling retrofit

vendor claim — not yet independently measured

Reshaping the bulbous bow for the speeds the vessel actually sails today. Many bows were optimised for pre-2008 design speeds; at today's slower speeds the original bulb can generate more resistance than it cancels.

2–6%
CO₂ emissions reduction
€300k–900k
indicative capex band (vendor/literature prior)
5–10 days
drydock required
9,484
eligible vessels in our database

Which ships it suits

  • Segments: Bulk carrier, Oil tanker, Chemical tanker, Container ship, General cargo ship
  • Size: from 20,000 DWT
  • Remaining service life: at least 8 years (payback must fit inside it)

Addressable opportunity (CII band D/E fleet)

1,911
D/E vessels eligible for this measure
€573–1,720M
installed-base capex range
0.40–1.19 Mt
annual CO₂ reduction (claimed range × reported emissions)

Eligible 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.