<p>The International Maritime Organization's Marine Environment Protection Committee (MEPC) has adopted amendments to the carbon intensity indicator (CII) framework that will take effect from January 2027. The revised regulations introduce stricter annual reduction factors, updated reference lines for 28 ship types, and enhanced enforcement mechanisms for vessels receiving consecutive D or E ratings.</p><p>Key changes include a tightened required annual operational CII reduction rate of 5% per annum (up from 2% in the initial phase), recalibrated boundary values reflecting actual fleet performance data collected since 2023, and a mandatory Ship Energy Efficiency Management Plan (SEEMP) Part III revision requirement for vessels rated D for two consecutive years or E in any single year.</p><p>Port states are now empowered to conduct targeted inspections on persistently low-rated vessels, with potential operational restrictions including reduced port call frequency or mandatory speed limitations until corrective measures are verified. Classification societies must incorporate CII compliance status into statutory survey scopes, linking environmental performance directly to certificate validity.</p><p>Industry stakeholders have expressed mixed reactions. While environmental NGOs welcome the strengthened enforcement, shipowner associations caution that the accelerated reduction trajectory may disproportionately impact older tonnage and smaller operators lacking access to capital for retrofits. Analysts at Clarksons Research estimate that approximately 15-20% of the global merchant fleet could face corrective action requirements under the new thresholds, potentially accelerating scrapping activity and newbuilding orders for eco-designed vessels.</p>