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Air lubrication system retrofit

vendor claim — not yet independently measured

Compressor-fed air bubbles distributed under the flat bottom that reduce friction between hull and water. Works best on wide, flat-bottomed ships; carries a parasitic power cost for the compressors.

5–10%
CO₂ emissions reduction
€2,000k–4,000k
indicative capex band (vendor/literature prior)
15–30 days
drydock required
4,995
candidate vessels (fitment unverified — equipment data cannot prove absence)

Which ships it suits

  • Segments: Bulk carrier, Oil tanker, Chemical tanker, Container ship, LNG carrier, Passenger ship (Cruise Passenger ship)
  • Size: from 60,000 DWT
  • Remaining service life: at least 10 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.