Environmental Groups Urge Countries to Protect Global Shipping Climate Rules Ahead of Key IMO Talks

Environmental organisations are urging governments to maintain momentum behind a proposed global climate framework for the shipping industry, warning that attempts to weaken or delay the agreement could slow efforts to reduce greenhouse-gas emissions from international maritime transport.

The Clean Shipping Coalition has called on members of the International Maritime Organization (IMO) to continue supporting the Net-Zero Framework, ahead of an important meeting scheduled for next week. The coalition argues that the framework represents a negotiated pathway for reducing emissions from ships and keeping the industry aligned with the IMO’s broader climate strategy.

Shipping Faces Growing Climate Pressure

International shipping plays a crucial role in global trade, carrying enormous quantities of goods between countries. At the same time, ships consume large amounts of energy, making the sector an important source of greenhouse-gas emissions.

The Clean Shipping Coalition estimates that shipping accounts for roughly 2–3% of global greenhouse-gas emissions. Environmental groups therefore argue that the industry cannot be left outside global efforts to slow climate change.

The challenge is particularly complicated because ships routinely cross national borders. A vessel may be registered in one country, operate in another country’s waters and transport cargo between several different nations.

That makes internationally coordinated rules essential.

What Is the IMO Net-Zero Framework?

The proposed framework is designed around two major mechanisms.

The first is a global fuel standard, which would progressively reduce the greenhouse-gas intensity of fuels used by ships.

The second is an economic pricing mechanism linked to greenhouse-gas emissions. The idea is to create a financial incentive for shipping companies to move toward cleaner fuels and technologies.

Together, these measures are intended to encourage investment in lower-emission shipping while creating common rules for companies operating internationally.

Why Environmental Groups Are Defending the Proposal

The Clean Shipping Coalition says the framework is not perfect but represents an important compromise reached after years of negotiations among IMO member states.

The group argues that reopening the basic structure of the agreement could result in weaker climate measures or further delays.

Environmental organisations are particularly concerned about proposals that could remove or dilute the economic component of the framework. They say a financial mechanism is important because simply setting emissions targets may not provide enough incentive for companies to rapidly invest in cleaner technologies.

A Financial Mechanism Could Encourage Cleaner Fuels

Shipping companies face significant costs when switching from conventional marine fuels to alternatives.

Cleaner fuels, new engines, energy-efficiency technologies and other low-carbon systems require major investments. A global emissions-pricing system could increase the economic pressure on high-emission operations while helping make cleaner alternatives more competitive.

Environmental groups also argue that revenue generated through such a mechanism could potentially support the transition in developing countries and vulnerable communities.

Developing Countries Are a Major Part of the Debate

The shipping transition is not simply an environmental question.

Many developing countries depend heavily on maritime transport for imports and exports. Changes in shipping costs and fuel systems can therefore have consequences for food, energy, manufactured goods and other essential commodities.

At the same time, countries with limited financial resources may have fewer opportunities to invest rapidly in new maritime technologies.

The Clean Shipping Coalition says the final system should therefore support a just and equitable transition, ensuring that climate-vulnerable countries are not disproportionately affected.

IMO Framework Still Requires Formal Adoption

The Net-Zero Framework has not yet become fully binding international law.

The IMO explains that the proposed regulations involve amendments to MARPOL Annex VI, the international convention covering pollution prevention from ships. The framework was approved by the Marine Environment Protection Committee in 2025, but discussions were subsequently postponed and are continuing in 2026.

Once formally adopted, the amendments would go through additional legal steps before entering into force.

This means the upcoming negotiations remain important because governments still have an opportunity to influence the final implementation of the framework.

Large Ships Would Be Covered

Under the current framework, the rules would apply to ocean-going ships above 5,000 gross tonnage.

According to the IMO, these vessels account for more than 85% of greenhouse-gas emissions from international shipping.

The framework would measure fuel emissions using a lifecycle approach, meaning emissions associated with fuel production and use would be considered rather than looking only at what comes out of a ship’s exhaust.

Alternative Proposals Create Debate

The Clean Shipping Coalition says several alternative proposals could weaken the framework’s climate ambition.

The organisation has specifically urged IMO members to resist proposals that, in its view, could undermine the agreement’s ability to deliver meaningful emissions reductions.

The coalition believes maintaining a common global system is preferable to allowing countries to pursue fragmented approaches that could create uncertainty for shipping companies and investors.

Shipping Companies Need Regulatory Certainty

The debate also has an important business dimension.

Shipping companies, fuel producers, ports and technology providers need to know what environmental rules will apply over the coming decades before making major investments.

A clear global framework could help companies decide whether to invest in alternative fuels, more efficient vessels, onboard technologies or other decarbonisation solutions.

Repeated delays or major changes to international rules could make companies more cautious about committing capital to new technologies.

The Search for Cleaner Maritime Transport

The shipping industry is already exploring several potential pathways to lower emissions, including alternative fuels, energy-efficiency improvements, wind-assisted propulsion and new vessel technologies.

However, there is no single solution that can immediately replace conventional marine fuels across the entire global fleet.

That is why environmental organisations argue that strong international regulation is necessary to accelerate research, investment and deployment.

A Critical Moment for Climate Policy

The coming IMO discussions could therefore influence the direction of maritime climate policy for years.

Supporters of the Net-Zero Framework want governments to preserve the core elements of the agreement and move toward formal adoption rather than reopening fundamental negotiations.

Critics and some governments, meanwhile, have raised concerns about the economic consequences and design of the proposed measures.

The central challenge will be finding a framework that reduces emissions while remaining workable for a global industry and fair to countries with very different economic circumstances.

What Happens Next?

The IMO’s continuing negotiations will determine whether the Net-Zero Framework moves forward largely in its current form or undergoes further changes.

For environmental organisations, the priority is to prevent the process from losing momentum.

For governments and the shipping industry, the challenge is to create rules that provide both credible climate action and enough certainty for businesses to invest.

Whatever the final outcome, the debate demonstrates that international shipping has become an increasingly important part of the global climate conversation.

The decisions made by IMO member states could ultimately influence how quickly one of the world’s most important transport industries moves toward a lower-emission future.