With the expansion of the EU Emissions Trading System to include the Maritime Transport Sector, shipping companies face new implications and requirements. The Commission Decision 2024/411 allocates companies to specific countries based on registration, yet this doesn't mandate emission accountability in those countries if multiple entities may qualify as shipping companies for a vessel. Compliance involves surrendering emission allowances and reporting data as per Directive 2003/87/EC. This expansion prompts adjustments to long-term charter agreements to regulate obligations related to EU ETS operation, emphasizing the need for meticulous monitoring and reporting of CO2 emissions.