Topicality. russia's aggression against Ukraine was the main factor behind the food crisis and the increase in food prices at the international level. Acceptable logistics routes were blocked. Domestic water transport, rail transport and road transportation of goods were not able to export enough crops to ensure global food security. All these pressing issues in the field of maritime transport in Ukraine prompt us to investigate the nature of the problem.Aim and tasks. The purpose of the article is to analyze the activities of Ukraine's maritime transport based on national and global security.Materials and methods. The study was based on the results of scientific works of leading scientists in the field of maritime transport development and ensuring national, economic and food security. In writing the article, the methods of synthesis, theoretical generalization, empirical and analytical models of scientific research were applied.Research results. The study analyzes the activities of the ports of Great Odesa under the Grain Agreement (for the year of the agreement's existence). A significant impact on the disruption of the systematic operation of the grain corridor is caused by the russian federation, which led to a complete blockade of the Pivdennyi port and significant damage to port infrastructure, grain terminals and elevators in Odesa and Odesa region. The ports of Great Odesa exported 32.8 million tons of agricultural food products. In total, 1006 vessels left the ports of Great Odesa. The most active exporting countries are: China (8.0 million tons), Spain (6.0 million tons), Turkey (3.2 million tons), Italy (2.1 million tons), the Netherlands (2.0 million tons), Egypt (1.6 million tons) and Bangladesh (1.1 million tons).Conclusion. The analysis shows that for the further smooth functioning of the Black Sea Initiative, it is necessary to involve more influential international organizations in its regulation; to improve the institutional and economic system of maritime transport and introduce mechanisms that will encourage it to compete at the international level; to optimize the logistics supply chains of cargoes, to improve the multimodal approach to the functioning of the transport system of cargo transportation.