As we transition into a more environmentally conscious era, the imperative for the maritime industry to adopt greener practices is undeniable. The ferry sector, which serves millions of passengers, should prioritize safety and efficiency and ensure that travelers can be confident that their journeys do not contribute to environmental degradation. Embracing sustainable technologies and low-emission solutions is essential for minimizing the ecological footprint of ferry transport while maintaining high standards of reliability and passenger security. This study aims to assess whether the ferry fleet has undergone modernization and to evaluate the extent to which ferry companies comply with environmental standards and policies. This thesis examines technological advancements in the sector, the implementation of sustainable practices, and the alignment of ferry operators with regulatory frameworks designed to reduce emissions and enhance environmental performance. The hypothesis is that most of the ferry fleet is aligned with international environmental standards, incorporating sustainable technologies and practices. Despite the assumption that full compliance with the ferry fleet with international environmental standards remains a challenge. Concluding that the modernization of the ferry fleet is essential for achieving a more sustainable maritime industry, significantly reducing emissions and improving operational efficiency, although challenges related to investment and regulatory support remain. The paper is separated into 6 chapters: 1) Introduction; 2) The importance of ferry fleet modernization; 3) Ferry fleet modernization in different countries; 4) Environmental Impact; 5) International Environmental Standards; 6) Concluding Remarks and recommendations.