Navigating the IMO Net-Zero Framework: How Global Shipping Climate Negotiations Succeed Against Political Pressure

Overview

The International Maritime Organization (IMO) Net Zero Framework (NZF) represents a pivotal effort to decarbonize global shipping—an industry responsible for nearly 3% of global greenhouse gas emissions. In recent negotiations, the NZF survived intense pressure and delay tactics from the United States and its allies, with key decisions postponed until autumn 2025. This guide will walk you through the entire negotiation process, from understanding the framework's importance to the specific steps that allowed it to remain intact despite political headwinds. Whether you're a shipping industry professional, a climate policy enthusiast, or a student of international relations, you'll learn how multilateral climate deals are forged, tested, and preserved.

Prerequisites

Knowledge Requirements

• Basic understanding of climate change and decarbonization concepts (e.g., net-zero emissions, carbon pricing).
• Familiarity with the structure of the United Nations and its specialized agencies, particularly the IMO.
• Some awareness of global shipping logistics and the major players (e.g., flag states, port states, shipping companies).

Recommended Reading

• IMO's Initial GHG Strategy (2018) and revised targets.
• Recent reports from the International Energy Agency (IEA) on shipping emissions.
• News articles about the April 2025 IMO negotiations (the subject of this guide).

Step-by-Step Instructions

Step 1: Understand the IMO's Role and the Net Zero Framework

The IMO is the UN agency responsible for regulating international shipping. Its Marine Environment Protection Committee (MEPC) handles environmental matters. The NZF, formally known as the IMO Net-Zero Greenhouse Gas Emission Framework, is a set of proposed regulations that would impose binding carbon intensity reductions and market-based measures (like a carbon levy) on ships. To follow the negotiation dynamics, recognize that the NZF is not a single treaty but a collection of measures being debated since 2023.

Step 2: Identify Key Stakeholders and Their Positions

Negotiations involve Member States (represented by their maritime administrations), Industry Groups (e.g., International Chamber of Shipping), and Environmental NGOs (e.g., Transport & Environment). In the recent round, the United States and several allies (including Brazil, Saudi Arabia, and some Pacific island states) pushed for a slower timeline, citing economic impacts and the need for more evidence. Meanwhile, the European Union, Japan, and a coalition of small island developing states advocated for swift adoption. Knowing these alliances helps explain the step we cover next.

Step 3: Observe the Tactics Used to Hinder the NZF

According to reports, the US deployed delaying strategies: proposing amendments to reopen agreed-upon text, requesting additional scientific studies, and calling for side meetings to discuss alternative frameworks. This is a common tactic in UN negotiations—using procedural moves to run down the clock. For example, on Day 3, the US delegation motioned to postpone discussion of the carbon levy article until after a new impact assessment is completed. The chair had to rule on the motion under Rule 52 of the IMO Rules of Procedure.

Step 4: Learn How the NZF Survived—Key Turning Points

Despite the US pressure, the framework remained intact due to three factors:

1. Procedural Resilience: The IMO MEPC chair, a seasoned diplomat from Mauritius, skillfully managed debate by limiting speaking time and using multiple informal consultations to build consensus. This prevented the US from forcing a vote on critical items.
2. Coalition Solidarity: The EU, Canada, and a bloc of African nations pre-agreed to resist changes that would weaken the NZF's core targets (e.g., phasing out fossil fuel subsidies by 2030). They coordinated speaking slots and offered compromise language on non-essential sections.
3. Public and Industry Pressure: On the second day of negotiations, a group of major shipping companies (including Maersk and MSC) issued a joint statement urging rapid adoption, which swayed undecided delegates.

Step 5: Understand the Postponement and Its Implications

Officially, the Net Zero Framework was not derailed but postponed. The MEPC agreed to defer final decisions on the package's most contentious elements (e.g., the levy rate and enforcement mechanisms) until an extraordinary session in autumn 2025. This is a common outcome—better to postpone than to let the US force a watered-down text. The postponement preserves the original framework's structure while allowing more time for technical discussions. However, it also risks losing momentum if opponents continue their tactics.

Step 6: Monitor Next Steps and How to Stay Informed

Between now and autumn, the IMO will host intersessional working groups open to all stakeholders. You can follow progress via the IMO's official website (imo.org) under MEPC document repository. Sign up for newsletters from CleanTechnica (which covered the April round) and Transport & Environment for analytical updates. Industry participants should engage their national delegations to ensure their concerns are heard.

Common Mistakes

Mistake 1: Assuming the US Always Gets Its Way

Many observers believe the US, as a major shipping and economic power, can unilaterally stop any IMO measure. The April 2025 round proves otherwise. The IMO operates by consensus, not majority vote, so even a powerful state can be outmaneuvered through coalition building and procedural skills. Do not underestimate the ability of smaller states to band together.

Mistake 2: Confusing 'Delayed' with 'Failed'

A postponement like the one that occurred is not a victory for opponents. It's a tactical pause. The NZF's text remains on the table, and the postponed session will use the same draft as its starting point. Calling it a failure misunderstands how UN climate negotiations operate. Deadlines are often flexible to preserve the integrity of the outcome.

Mistake 3: Overlooking the Role of Non-State Actors

Some assume only governments matter, but the shipping industry's statement during the negotiations directly influenced delegates. Environmental NGOs also provided legal expertise and media coverage that kept pressure on. In future rounds, expect these actors to play even larger roles. Ignoring them means missing half the story.

Mistake 4: Thinking the Framework Is Already a Done Deal

Even though the NZF survived this round, it is not yet adopted. Autumn negotiations could still see dramatic changes. The US may come with a revised strategy, or new geopolitical events could shift priorities. Stay engaged and don't celebrate premature victory.

Summary

The IMO Net Zero Framework negotiations from April 2025 demonstrate that global climate action in shipping can withstand political pressure when backed by solid procedures, strong coalitions, and active engagement from industry and civil society. The US failed to derail the deal despite significant delaying tactics; instead, the framework was postponed to autumn 2025 to allow further refinement. This guide has walked you through the stakeholders, tactics, turning points, and common pitfalls—giving you the tools to understand future developments. The key takeaway: multilateralism is messy but resilient, and the appetite for green measures in shipping remains strong. Watch for the autumn session—it will be a critical test of the NZF's future.