Atualizado em 17 de agosto de 2026

Global Maritime Companies Ranking by
Fleet Total Emissions (ktonsCO2eq)

Discover the world's largest shipping companies ranked by fleet total emissions in ktonsCO2eq, updated for 2025. Our comprehensive analysis covers major global carriers and their total fleet emission levels.

Total Companies Analyzed

Combined Fleet Emissions

5.1M

Industry Average

138.1K

Top 3 Maritime Companies by fleet total emissions

The podium below showcases the three shipping companies with the highest fleet total emissions measured in ktonsCO2eq. Understanding which companies produce the most emissions is essential for tracking industry decarbonization progress.

SITC Container Lines

ktonsCO2eq

COSCO Shipping Specialized Carriers Co., Ltd.

ktonsCO2eq

SALAM PACIFIC INDONESIA LINES

ktonsCO2eq

COSCO Shipping Specialized Carriers Co., Ltd.

ktonsCO2eq

SITC Container Lines

ktonsCO2eq

SALAM PACIFIC INDONESIA LINES

ktonsCO2eq

Understanding Maritime Rankings

Key Ranking Criteria

Fleet Total Emissions

Primary Factor

Fleet total emissions in ktonsCO2eq is the central metric in our ranking system. It measures the absolute volume of greenhouse gas emissions produced by a company's entire fleet. This factor provides a clear picture of each carrier's environmental footprint and its contribution to maritime sector emissions. Companies with lower total emissions relative to their fleet size demonstrate superior environmental performance.

Our Methodology

Data Collection

The ranking process begins with data collection, gathering verified fleet emission data from IMO databases, company sustainability reports, and environmental monitoring agencies.

Verification

Once collected, every data point undergoes a verification process where it is cross-referenced with multiple independent sources to confirm accuracy.

Analysis

The next stage is analysis, where companies are ranked by their fleet total emissions in ktonsCO2eq.

Quarterly Updates

Finally, our rankings are updated quarterly, ensuring they reflect the latest fleet emission measurements, including changes from new vessel deliveries, fleet retirements, and operational adjustments.

Why Fleet Total Emissions Matter in Shipping Rankings

Fleet total emissions provide the clearest measure of a shipping company's environmental impact, essential for regulatory compliance and sustainability assessment.

Environmental Transparency

Total emission data enables stakeholders to assess a company's true environmental impact and compare carriers on an absolute basis.

Regulatory Accountability

IMO Data Collection System (DCS) and EU MRV require companies to report total emissions, making this metric a regulatory benchmark.

Decarbonization Tracking

Monitoring total emissions over time reveals whether a company is genuinely reducing its carbon footprint or merely improving intensity metrics while growing absolute emissions.

Global Maritime Companies Fleet Emissions Ranking

The comprehensive table below ranks the world's leading maritime shipping companies based on their fleet total emissions in ktonsCO2eq. Additional metrics such as CO2 reduction percentage and alternative fuel usage provide further context on each company's environmental trajectory.

Rank	Company	Country	Total CO2 Reduction (%)	Fleet CO2 Reduction (%)	Alternative Fuel (%)
1	COSCO Shipping Specialized Carriers Co., Ltd.		0	0	0
2	SITC Container Lines		0	0	0
3	SALAM PACIFIC INDONESIA LINES		0	0	0
4	Stolt Tank Containers		0	0	0
5	Orient Overseas Container Line		0	0	0
6	A.P. Moller - Maersk		0	0	0
7	Mediterranean Shipping Compagny		0	0	0
8	COSCO Shipping		0	0	0
9	Nippon Yusen Kaisha		0	0	0
10	DHL Global Forwarding		0	0	0

Global Shipping Industry Insights

Distribuição de transportadores por Fleet Total Emissions (ktonsCO2eq)

Pequenos operadores5 (14%)

Operadores médios1 (3%)

Grandes operadores31 (84%)

Fonte: dados agregados Seadex, 2026

Concentração e tendências do setor

Concentração do top 100.0%

Os 10 principais transportadores representam 0.0% da métrica global em 37 empresas.

Média por empresa138.1K

Valor médio entre os 37 transportadores acompanhados na nossa base.

Total do setor5.1M

Valor acumulado em todos os transportadores com dados disponíveis.

Fonte: dados agregados Seadex, 2026

Regional Distribution & Leadership in Global Shipping

European Fleet Emission Standards

European carriers face the most stringent emission reporting requirements, with EU MRV and ETS driving transparency and reduction efforts.

EU ETS inclusion of maritime transport has added a direct cost to carbon emissions, incentivizing European carriers to reduce fleet totals
Nordic carriers lead in fleet emission transparency, with detailed public disclosures exceeding regulatory minimums

Asia-Pacific Fleet Scale

Asian carriers operate the largest fleets globally, making their total emission figures critical to industry-wide decarbonization.

Chinese and Korean carriers are investing in LNG and dual-fuel new-builds to reduce fleet total emissions while expanding capacity
Japanese carriers have pioneered fleet emission monitoring systems, enabling real-time optimization of fuel consumption and emissions

Frequently Asked Questions

What does ktonsCO2eq mean?

ktonsCO2eq stands for kilotons of CO2 equivalent, a unit that converts all greenhouse gas emissions into the equivalent amount of CO2 based on their global warming potential.

How are fleet total emissions measured?

Fleet total emissions are calculated from fuel consumption data, emission factors for each fuel type, and verified through IMO DCS, EU MRV, and third-party audits.

How often is this ranking updated?

Rankings are updated quarterly to incorporate the latest emission monitoring data and sustainability disclosures from shipping companies.

Why do larger fleets have higher total emissions?

Larger fleets naturally produce more absolute emissions due to more vessels in operation, which is why emission intensity metrics are also important for fair comparison.

How do fleet retirements affect total emissions?

Retiring older, less efficient vessels and replacing them with modern eco-ships typically reduces fleet total emissions even while maintaining or growing transport capacity.

What international frameworks regulate fleet total emissions?

IMO DCS, EU MRV, IMO GHG Strategy, and national regulations require shipping companies to report and reduce their fleet total greenhouse gas emissions.