Naval diplomacy involves a set of joint actions undertaken internationally involving the military and its assets in the service of diplomacy. As part of defense diplomacy, the role of maritime forces in crisis prevention has great importance for stability. The action of diplomacy can be preventive, intimidating or coercive. Navies are like symbols of national sovereignty and power, and have a defensive, symbolic, supportive and coercive value. Through preventive action, maritime diplomacy tries to prevent the outbreak of local crises and thus contribute to the preservation of regional and world peace. Efforts are made to avoid entering into crisis and conflict situations, creating the will for dialogue and bringing conflicting parties to the negotiating table. Navies and Coast Guards can be active in peacetime activities, non-combat operations, low- and high-intensity conflicts. Military and naval power will continue to play a major role in the protection and preservation of state interests at sea. Maritime claims can become the focus of wider conflicts at sea between major powers. This is possibly the case with countries such as the USA, Great Britain, Japan and the People's Republic of China. Naval power is a powerful tool in support of foreign policy, state military strategy or the strategy of military action in a certain area, as well as various military operations. It is an integral part of homeland security, and in the event of a regional or global conflict, land forces cannot achieve final victory without safe use of the sea. Objectives such as acquiring, maintaining and enforcing ocean surveillance cannot be achieved without strong and effective naval power.