The change in the strategic situation on the Baltic Sea has affected the surveillance carried out in the area. Almost all navies on the Baltic Sea use surveillance vessels and increasingly so in the northern parts of the Baltic and in the Gulf of Finland.

Aircraft are also regularly used for maritime reconnaissance and surveillance. In future, reconnaissance drones will assume a larger role in maritime surveillance and may also be equipped with surveillance radars.

Fixed maritime surveillance still forms the basis of surveillance on Finland's coast. It will still be based on radar and human observation. In addition, various optronic and underwater systems and identification friend or foe transponders installed on vessels will replace traditional human observation and supplement radar surveillance.

Fixed FIKA radars along the Finnish coast form the framework of the national maritime surveillance system.