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 SEMAR Headquarters is located it Madrid, in the General Directorate of Guardia Civil.

Website: ​https://www.guardiacivil.es/es/institucional/Conocenos/especialidades/ServicioMaritimo/index.html​