Shipping Fuel Rules Await Global Adoption Vote
The IMO Net-Zero Framework, approved in April 2025, would set binding fuel emissions standards once adopted, a step still under dispute.
Updated on Nov. 6, 2026 in Environmental
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Should governments require shipping companies to cut greenhouse gas emissions, even if costs rise?
Seas At Risk called on world leaders at COP31 to urgently cut greenhouse gas and black carbon emissions, citing the ocean's role in absorbing excess heat. The IMO Net-Zero Framework, which would set a fuel GHG intensity standard and an economic mechanism for shipping, was approved by IMO Member States in April 2025 but has not yet been adopted. The call is advocacy, and the shipping framework remains research-stage policy rather than binding rule.
Why it matters
The ocean absorbs around 90% of the excess heat trapped by greenhouse gases, and the effects already show up as marine heatwaves, ocean acidification and rising sea temperatures. Because the IMO framework is still politically contested, the timing of global binding measures for shipping emissions depends on decisions not yet taken.
The figures cited are the ocean's share of absorbed excess heat (around 90%) and the warming potency of methane and black carbon relative to CO2 (up to 1600 times). The source reports these as established comparisons, but it presents no new measured emissions reduction from the proposed IMO standard.
The players
Seas At Risk
A European ocean-protection advocacy network that campaigns on shipping and marine pollution policy.
International Maritime Organization (IMO)
The United Nations agency that sets global shipping rules, including the Net-Zero Framework under negotiation.
United Nations Environment Programme (UNEP)
The UN body that publishes the annual Emissions Gap Report tracking national climate pledges against warming targets.
The details
Greenhouse gases trap heat in the atmosphere, and the ocean absorbs most of the excess, which regulates the planet's climate. The IMO Net-Zero Framework would reduce shipping emissions through a fuel GHG intensity standard, which caps how much greenhouse gas a fuel can emit per unit of energy, paired with an economic mechanism to make cutting emissions financially worthwhile. Methane and black carbon, a fine soot from burning fuel, are short-lived super pollutants whose warming effect per unit is far larger than CO2's, which makes cutting them a fast lever. Seas At Risk also advocates a dedicated fund to help countries and communities bearing disproportionate transition costs.
Timeline
April 2025: IMO Member States approved the Net-Zero Framework.
November 2026: COP31 is underway and Seas At Risk is calling for urgent action.
December: IMO discussions and decisions on the framework are scheduled.
The Tech Race
The shipping framework sits within the IMO's multi-year effort to set a global carbon standard for the sector, which remains unadopted. Competing approaches and national measures are not detailed in the source.
The shipping standard, if adopted, would change how fuel used by vessels is measured and priced, which affects the cost of goods moved by sea. Timing is uncertain because the framework has not been adopted, so no change reaches consumers yet.
The takeaway
The ocean's role in absorbing heat means emissions cuts now shape ocean health for decades. Watch the December IMO decisions on the Net-Zero Framework, since whether it is adopted determines when binding shipping measures begin.
What happens next
IMO discussions and decisions on the Net-Zero Framework are scheduled for December, after which further delays would postpone binding global measures.
Further reading
For broader context on how these emissions targets fit into global efforts, explore our Environmental coverage.
Live Poll
Should governments require shipping companies to cut greenhouse gas emissions, even if costs rise?
