A major intergovernmental maritime summit has concluded with a pledge to accelerate retrofitting of existing vessels with lower-emission propulsion assist systems. Port authorities in three global shipping hubs have simultaneously released incentive schemes for early adopters. Environmental campaigners have described the outcome as a step forward, while shipowners’ groups have called for more consistent fuel availability across different regions. The summit also produced a working group mandate to study cold-ironing infrastructure expansion at secondary ports, which could reshape berthing patterns over the medium term. Delegates acknowledged that financial and technical barriers remain significant, particularly for older vessel classes. A dedicated funding facility is being explored to support owners in high-cost retrofit scenarios. Additionally, the summit agreed on a shared data framework to monitor emissions reductions from retrofitted fleets, enabling more transparent progress tracking. While immediate implementation challenges are recognised, the political consensus reached is viewed as essential for sustaining long-term decarbonisation momentum in the maritime sector.