Global Maritime Companies Ranking by
Fleet Annual CO2 Emissions Scope 1 (ktonsCO2eq)
Discover the world's largest shipping companies ranked by fleet annual CO2 emissions (Scope 1) in ktonsCO2eq, updated for 2025. Our comprehensive analysis covers major global carriers and their direct annual fleet emission levels.
Total Companies Analyzed
180
Combined Scope 1 Emissions
780M+ tons
Year-over-Year Change
-2.8%
Top 3 Maritime Companies by fleet annual Scope 1 CO2 emissions
The podium below showcases the three shipping companies with the highest fleet annual CO2 emissions (Scope 1) measured in ktonsCO2eq. Tracking direct fleet emissions is essential for understanding each carrier's operational carbon footprint.
2
SALAM PACIFIC INDONESIA LINES
0
ktonsCO2eq
1
SITC Container Lines
0
ktonsCO2eq
3
A.P. Moller - Maersk
0
ktonsCO2eq
1
SITC Container Lines
0
ktonsCO2eq
2
SALAM PACIFIC INDONESIA LINES
0
ktonsCO2eq
3
A.P. Moller - Maersk
0
ktonsCO2eq
Understanding Maritime Rankings
Key Ranking Criteria
Fleet Annual CO2 Emissions (Scope 1)
Primary FactorFleet annual CO2 emissions (Scope 1) in ktonsCO2eq is the central metric in our ranking system. It measures the direct greenhouse gas emissions from fuel combustion across a company's operated fleet over one year. This factor provides the most direct view of a carrier's operational environmental impact. Companies with lower Scope 1 emissions relative to their transport work demonstrate superior fuel efficiency and cleaner operations.
Our Methodology
01
Data Collection
The ranking process begins with data collection, gathering verified Scope 1 fleet emission data from IMO DCS, company sustainability reports, and classification societies.
02
Verification
Once collected, every data point undergoes a verification process where it is cross-referenced with multiple independent sources to confirm accuracy.
03
Analysis
The next stage is analysis, where companies are ranked by their fleet annual CO2 emissions (Scope 1) in ktonsCO2eq.
04
Quarterly Updates
Finally, our rankings are updated quarterly, ensuring they reflect the latest emission measurements from vessel monitoring systems and regulatory filings.
Why Fleet Scope 1 Emissions Matter in Shipping Rankings
Fleet Scope 1 emissions represent the direct carbon output of vessel operations, making them the most tangible measure of a carrier's environmental responsibility.
Operational Accountability
Scope 1 emissions are directly under a company's control, making them the clearest indicator of operational commitment to emission reduction.
CII Compliance
IMO's Carbon Intensity Indicator directly measures Scope 1 efficiency, with ratings affecting vessel operational permits and charter eligibility.
Investor Transparency
ESG investors increasingly focus on Scope 1 emissions as the most reliable measure of a company's direct environmental performance.
Global Maritime Companies Fleet Scope 1 Emissions Ranking
The comprehensive table below ranks the world's leading maritime shipping companies based on their fleet annual CO2 emissions (Scope 1). Additional metrics such as total CO2 reduction and alternative fuel adoption provide further context on each company's decarbonization trajectory.
Global Shipping Industry Insights
Scope 1 Emissions by Fleet Segment
Container Fleet55%
Bulk Fleet25%
Tanker Fleet15%
Other Fleet5%
Source: International Maritime Organization, 2025
Scope 1 Emission Trends
Annual Scope 1 Change-2.8%
Global fleet Scope 1 emissions decreased by 2,8% year-over-year, driven by fleet modernization and alternative fuel adoption.
LNG Adoption Impact-25%
Vessels running on LNG produce approximately 25% fewer Scope 1 CO2 emissions compared to conventional heavy fuel oil.
CII Rating DistributionA-C: 68%
68% of the global fleet achieved CII ratings of A, B, or C, indicating satisfactory Scope 1 carbon intensity performance.
Source: World Shipping Council, 2025
Regional Distribution & Leadership in Global Shipping
European Scope 1 Leadership
European carriers face direct carbon costs under EU ETS, creating strong incentives to minimize fleet Scope 1 emissions.
- Maersk's methanol-powered vessels achieve significant Scope 1 reductions on European trade routes
- EU monitoring frameworks (MRV) provide the most granular public data on fleet Scope 1 emissions, driving transparency
Asia-Pacific Fleet Efficiency
Asian carriers are focusing on engine efficiency and LNG adoption to reduce fleet Scope 1 emissions while maintaining growth.
- Japanese carriers lead in hybrid propulsion technology, combining conventional engines with battery and wind-assist systems
- South Korean and Chinese new-builds increasingly feature dual-fuel engines designed for lower Scope 1 emissions from day one
Frequently Asked Questions
What are Scope 1 fleet emissions?
Scope 1 fleet emissions are direct greenhouse gas emissions from fuel combustion in vessel engines, boilers, and onboard power generation systems.
How are fleet annual Scope 1 emissions calculated?
They are calculated from total fuel consumption across all operated vessels, multiplied by fuel-specific emission factors, and reported in ktonsCO2eq.
How often is this ranking updated?
Rankings are updated quarterly based on the latest IMO DCS filings, company disclosures, and third-party emission verification reports.
What is the difference between fleet Scope 1 and total company emissions?
Fleet Scope 1 covers only direct emissions from vessel operations, while total company emissions include shore facilities, offices, business travel, and supply chain impacts.
How does vessel age affect Scope 1 emissions?
Older vessels typically produce higher Scope 1 emissions due to less efficient engines and hull designs, though retrofitting can significantly improve performance.
What technologies reduce fleet Scope 1 emissions?
Key technologies include LNG and methanol engines, wind-assisted propulsion, air lubrication, hull optimization, and onboard carbon capture systems.
Explorar outros rankings
01
Tamanho da frota
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Volume transportado
Ranking por milhões de TEU
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Capacidade da frota
Ranking por capacidade (M TEU)
Compare capacidade total das frotas mundialmente
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Cobertura de portos
Ranking por portos atendidos
Compare cobertura de portos e alcance de rede
Ver ranking de portos06
Rotas marítimas
Ranking por rotas marítimas
Descubra quais oferecem a maior rede de rotas
Ver ranking de rotas07
Eficiência energética
Ranking por EEDI
Compare o EEDI de diferentes empresas.
Ver ranking de eficiência08
Eficiência operacional
Ranking por redução anual de CO₂ (EEOI)
Veja quais melhoram EEOI mais rápido
Ver ranking operacional09
Segurança de contêiner
Ranking por contêineres perdidos (% TEU)
Compare registro de segurança de contêiner
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Redução total de emissões
Ranking por redução anual de CO₂ (total)
Veja quais reduzem pegada mais rápido
Ver ranking de redução total11
Redução de emissões da frota
Ranking por redução de CO₂ da frota
Compare rapidez de redução de emissões da frota
Ver ranking de redução da frota12
Combustíveis alternativos
Ranking por % de frota com bio/dual fuel
Descubra líderes em adoção de combustíveis limpos
Ver ranking de combustíveis13
Emissões da frota
Emissões totais da frota (kt CO₂eq, Escopo 1)
Compare emissões absolutas sem ajuste de tamanho
Ver ranking de emissões da frota14
Emissões totais da empresa
Emissões totais da empresa (kt CO₂eq)
Veja pegada total incluindo todas operações
Ver ranking de emissões totais15
Emissões CO2 (WtW)
Ranking por emissões CO2 (Well-to-Wake)
Compare as emissões de CO2 do ciclo de vida das companhias marítimas, da produção de combustível à operação do navio
Ver ranking emissões CO2 (WtW)16
Redução anual CO2 (Escopo 1)
Ranking por % de redução anual CO2 (Escopo 1)
Identifique quais companhias marítimas estão alcançando a maior redução anual nas emissões diretas de CO2
Ver ranking redução anual CO2 (Escopo 1)