The Maritime Service of Guardia Civil (SEMAR) is the unit in charge of public security role on maritime waters under Spanish sovereignty. SEMAR also covers coastguard functions. To achieve this mission, it counts with several Maritime Service Units deployed all around the peninsula, islands and the autonomous city of Ceuta. The fleet, in order to cover all the requirements of the missions, is composed of a variety of ships, from semi-rigid boats to offshore patrol vessels. There is also a Maritime Training Centre in Cádiz.

The Spanish Maritime Safety and Rescue Agency provides the public services of search and rescue, pollution prevention and response, maritime traffic monitoring and assistance services, maritime safety and navigation services, towing services and assistance to ships, and any services that are complementary to those mentioned above. All of this is within the scope of the responsibilities of the Maritime Authorities. 

Website: www.gnr.pt

Out of 9 divisions of the Polish Border Guard, the Maritime Border Guard Division is responsible for protection of European Union's external blue border and fulfills coast guard functions, among which are maritime border control, prevention and suppression of trafficking and smuggling and connected maritime law enforcement, maritime monitoring and surveillance, maritime, ship and port security. 

Border Police Directorate,  Maritime and Airport Police Service 

Website: ​www.mup.hr​ 

The Croatian Coast Guard is a unit established within the Croatian Navy for the supervision and protection of the rights and interests of the Republic of Croatia at sea.

Website: https://www.morh.hr

Estonian Navy’s duty is to protect the territorial waters of Estonia. Patrol Boat Squadron is a Naval type of organisational entity that maintains readiness to ensure naval presence, law enforcement, oil-spill response and support of other national agencies in Estonian maritime areas. Patrol Boat Squadron consist of patrol and oil-spill response vessels. 

Website: https://mil.ee/en/navy/ 

Estonian State Fleet is an organisation which is maintaining state own ships (except Estonian Navy), navigational markers and providing piloting services, icebreaking services and other state maritime responsibility services. 

Website: https://www.riigilaevastik.ee/ 

The Environmental Board is a government agency which operates within the area of the Ministry of Climate. Our task is to implement state policies on environmental use, nature conservation and radiation safety and to monitor the fulfilment of the laws and norms established for the protection of the natural environment. 

Website: www.keskkonnaamet.ee/en 

The National Maritime Authority System (SAM) corresponds to the institutional framework of Entities, Bodies and Services, that have coordination, executive, advisory or law enforcement functions, whose purpose is to guarantee compliance with the law in maritime spaces under national sovereignty and jurisdiction. This Framework includes agencies at local, regional and national level, responsible for the coordination, advice and law enforcement.