Updated July 1, 2026
Global Maritime Companies Ranking by
by annual reduction c02
Discover the world s largest shipping companies ranked.
Total Companies Analyzed
16
Combined Fleet Size
43
Global TEU Capacity
2.7
Top 3 Maritime Companies by Annual CO2 Reduction
The podium below showcases the three shipping companies achieving the highest annual CO2 reduction rates. These industry leaders demonstrate the strongest commitment to decarbonizing their fleet operations.
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Understanding Maritime Rankings
Key Ranking Criteria
Maritime Companies Ranking
Primary FactorAnnual CO2 reduction percentage is the primary metric in this ranking, measuring each carrier's year-over-year decrease in total CO2 equivalent emissions. Higher reduction rates indicate more effective decarbonization strategies and operational improvements.
Our Methodology
01
Data Collection
Data is collected from carrier sustainability reports, IMO emissions filings, and verified environmental disclosures.
02
Verification
Reduction claims are cross-referenced with independent environmental audits and third-party emissions databases.
Maritime Companies Ranking
The comprehensive table below ranks shipping companies by their annual CO2 reduction performance. Additional metrics on fleet emissions and alternative fuel adoption provide further context on each company's environmental progress.
Global Shipping Industry Insights
Carrier distribution by by annual reduction c02
Low performers11 (69%)
Medium operators2 (13%)
High performers3 (19%)
Source: Seadex aggregated data, 2026
Industry concentration & trends
Top 10 concentration0.0%
The top 10 carriers represent 0.0% of the global metric across 16 companies.
Average per company2.7
Average value across the 16 carriers tracked in our database.
Industry total43
Combined value across all carriers with available data.
Source: Seadex aggregated data, 2026
Regional Distribution & Leadership in Global Shipping
European Decarbonization Leaders
European carriers lead in CO2 reduction rates, driven by EU ETS inclusion and ambitious corporate sustainability targets.
- Maersk and CMA CGM have achieved the highest annual emission reductions among global carriers
- EU regulations including FuelEU Maritime are accelerating the adoption of cleaner technologies across European fleets
Asia-Pacific Progress
Asian carriers are accelerating their decarbonization efforts with significant fleet renewal and technology investment.
- Japanese carriers ONE and NYK have implemented comprehensive emission reduction programs across their fleets
- Chinese carriers are investing in LNG and electric vessels for coastal and short-sea shipping routes
Frequently Asked Questions
How are companies ranked in this CO2 reduction list?
Companies are ranked by their annual percentage reduction in total CO2 equivalent emissions, with higher reduction rates indicating better performance.