Under Pressure From Trump, UN Shipping Regulator Delays Vote on Net-Zero Rules

Advocates of establishing an international framework for decarbonizing global shipping on Friday decried a postponed vote on proposed rules—a move that came amid pressure from the administration of US President Donald Trump and Saudi Arabia.

Members of the United Nations International Maritime Organization's (IMO) Marine Environment Protection Committee gathered in London for a special meeting, MEPC 83, to vote on its Net-Zero Framework (NZF), a new set of global regulations aimed at slashing the shipping industry's greenhouse gas emissions.

A Saudi proposal to adjourn the meeting and delay a final decision on the NZF narrowly passed by a vote of 57-49, with 21 abstentions, Mongabay reported.

The NZF—whose goal is net-zero shipping by 2050—has two main interconnected components, a global fuel standard requiring ships to gradually reduce emissions, and a pricing mechanism meant to encourage the industry to voluntarily slash greenhouse gas output.

"The delay leaves the shipping sector drifting in uncertainty."

The NZF was approved at the last MEPC meeting in April, then shared with member nations for review, with an eye toward final assent during the current special meeting. However, while the European Union and nations including China and Brazil have been pushing for the NZF, the world's two largest oil producers—the United States and Saudi Arabia—are working to scupper the proposal, which Russia also opposes.

Trump took to his Truth Social network Thursday to pressure MEPC members to vote "no" on the NZF:

I am outraged that the International Maritime Organization is voting in London this week to pass a global Carbon Tax. The United States will NOT stand for this Global Green New Scam Tax on Shipping, and will not adhere to it in any way, shape, or form. We will not tolerate increased prices on American Consumers OR, the creation of a Green New Scam Bureaucracy to spend YOUR money on their Green dreams. Stand with the United States, and vote NO in London tomorrow!

The one-year postponement drew sharp rebuke from supporters of the NZF.

“We are disappointed that member states have not been able to agree a way forward at this meeting," International Chamber of Shipping secretary general Thomas Kazakos said following Friday's vote. "Industry needs clarity to be able to make the investments needed to decarbonize the maritime sector, in line with the goals set out in the IMO [greenhouse gas] strategy."

"As an industry we will continue to work with the IMO, which is the best organization to deliver the global regulations needed for a global industry," Kazakos added.

John Maggs, who represents the Clean Shipping Coalition at the IMO, said in a statement, “By delaying adoption of its Net-Zero Framework, IMO has today squandered an important opportunity to tackle global shipping’s contribution to climate breakdown."

“With climate warming impacts being felt everywhere on Earth, kicking this decision down the road is simply evading reality," he added. "Governments serious about climate action must spend the next 12 months rallying every nation that supports the framework, convincing those who are on the fence, or opposing, that its adoption is the only sane way forward.”

Elissama Menezes, co-founder and director of the advocacy organization Equal Routes, said: "Delay costs the climate—and coastal Indigenous peoples and Arctic communities are already paying the price for inaction. This week’s non-outcome should mean that states and the marine sector should double down on related efforts to reduce the impacts from the triple planetary crisis.”

Faig Abbasov, director of shipping at the green group Transport & Environment, told Reuters that "the delay leaves the shipping sector drifting in uncertainty."

Global shipping accounts for approximately 3% of the world's CO2 emissions. Approximately 90% of all international trade is conducted at sea, and proponents of the NZF warn that emissions will soar without the regulations.

While leading shipping companies including Maersk and CMA CGM have taken steps to transition their fleets to zero emission vessels, they are still falling short of the goals laid out in the landmark Paris climate agreement or even the IMO’s own 2023 emissions reduction strategy.

”However, all is not lost—not by a long shot," said Maggs, "as there is an immediate opportunity to slash [greenhouse gas] emissions from shipping, minimize fuel burn, and the overall cost of the energy transition, and that is to strengthen and make enforceable the carbon intensity indicator (CII), the IMO’s cornerstone energy efficiency measure."

CII is a shipping industry regulatory metric that measures a vessel's annual carbon intensity.

“There’s no time to waste," Maggs added. "At MEPC 84 in April 2026 member states need to focus all their attention on transforming the CII into the energy efficiency powerhouse needed to quickly right this ship and put it back on route to being a climate solution.”