Purpose: was to analyze the specifics of protection and defense of the sea area of the state crown of Ukraine. Design/Method/Approach: analyzed scientific literature, legal documents, the results of the analysis of operational and service activities at the sea border, analytical reports on the situation at the state border. Findings: basic differences in maritime border protection, namely: - the need for visual inspection and radio monitoring; - control of the coastal strip in order to detect signs of landing, ie violation of the law on border issues in the coastal area or entry into the sea of violators; - representatives of the border service are obliged to report on detected non-military and military ships in the waters of Ukraine; - personnel of the Border Guard Service, personnel of ships and border aviation have the right to act in accordance with the Law of Ukraine "On the State Border"; - observance of the border regime in the issue of accounting, storage and release of watercraft, etc. Theoretical implications: in the compilation of popular scientific views on the problem of research. The practical value of the study lies in the fact that the compilation of scientific views on the problem and the features of the functioning of the maritime border. Future research. Promising areas of further research are identified as follows: ways to improve methods of protection and defense of the maritime area of the state border. Papertype: theoretical and generalizing.