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Ro-pax ship — emissions rankings

Ro-pax ferries — carrying trucks, cars and passengers on fixed short-sea rotations — top the absolute emissions tables year after year, and duty cycle is the reason: several crossings a day, near-zero idle time, and a hotel load that never sleeps. Per transported unit on routes where the alternative is hundreds of road kilometres, their footprint reads very differently.

The type is also where electrification is happening first in merchant shipping: battery-hybrid conversions and shore power at berth are already cutting the intensity of the most modern operators — a trend the yearly MRV figures have started to register.

Verified data reported under the EU MRV regulation (source: EMSA / THETIS-MRV).

Most efficient: Ro-pax ship

Ranked by CO₂ emitted per tonne of cargo carried over one nautical mile — the metric that makes ships of different sizes comparable. Lower is better.

#VesselCompanyRegistryEfficiency
1RhapsodyGrandi Navi Veloci SpaGenoatop 0%
2ForzaGrandi Navi Veloci SpaGenovatop 0%
3FantasticGrandi Navi Veloci SpaPalermotop 1%
4ExcelsiorGrandi Navi Veloci SpaPalermotop 1%
5Gnv AntaresGrandi Navi Veloci SpaNaplestop 1%
6SplendidGrandi Navi Veloci SpaPalermotop 1%
7Victoria Of Wight—Portsmouthtop 1%
8Gnv AllegraGrandi Navi Veloci SpaGenoatop 2%
9Gnv SealandGrandi Navi Veloci SpaVenezia - RI 042top 2%
10La SupremaGrandi Navi Veloci SpaPalermotop 2%
11Gnv PolarisGrandi Navi Veloci Spa—top 2%
12Gnv OrionGrandi Navi Veloci SpaGenovatop 3%
13TenaciaGrandi Navi Veloci SpaPalermotop 3%
14Gnv BluGrandi Navi Veloci SpaNapolitop 3%
15Gnv SpiritGrandi Navi Veloci SpaNaplestop 3%
16ExcellentGrandi Navi Veloci SpaPalermotop 3%
17Gnv SirioGrandi Navi Veloci SpaGenovatop 4%
18St.clare—Londontop 4%
19Gnv AurigaGrandi Navi Veloci SpaGenovatop 4%
20Gnv VirgoGrandi Navi Veloci SpaGenovatop 4%
21Caledonian Isles—Glasgowtop 4%
22Loch Seaforth—Glasgowtop 5%
23MajesticGrandi Navi Veloci SpaPalermotop 5%
24Wasa ExpressUnited Marine Egyptlimassoltop 5%
25Hebrides—Glasgowtop 5%

Biggest CO₂ emitters

#VesselCompanyCO₂ 2025 (t)
1Superfast XiSuperfast Ferries S.a.127,344
2Cruise RomaGrimaldi Euromed S.p.a119,158
3La SupremaGrandi Navi Veloci Spa109,805
4Cruise BarcelonaGrimaldi Euromed S.p.a100,073
5FinnmaidFinnlines Plc98,717
6Color MagicColor Line Marine AS94,998
7FinnstarFinnlines Plc94,262
8FinnladyFinnlines Plc93,353
9Color FantasyColor Line Marine AS93,060
10W.b. YeatsMatrix Ship Management Ltd91,981
Oil tankerBulk carrierChemical tankerLNG carrierVehicle carrierGeneral cargo shipPassenger ship (Cruise Passenger ship)