The Centres Régionaux Opérationnels de Surveillance et de Sauvetage (CROSS, "Regional Operational Centres for Monitoring and Rescue") are a network of stations on the French coast.
Their missions are
Search and Rescue
Monitoring of sea traffic
Monitoring of pollution
Monitoring of fishing operations
Broadcasting of maritime safety information
Alert management and information broadcast of maritime security
The continental littoral counts six stations:
CROSS Gris-Nez, in Wissant: Eastern English Channel - Pas-de-Calais
CROSS Jobourg: Central Channel
CROSS Corsen, in Plouarzel: Western Channel
CROSS Étel: Bay of Biscay
CROSS La Garde: North-western Mediterranean Sea
Sous CROSS Corse (aka CROSS-MED) in Ajaccio, a secondary station (MRSC)
Two centres, and five secondary stations and SAR stations are located in the Overseas departments and territories of France:
CROSS Antilles-Guyane in Fort-de-France: Caribbean Sea
CROSS de la Réunion: Southern Indian Ocean
JRCC Polynésie française, in Papeete (Tahiti): Pacific Ocean = fusion des MRCC (Maritime) and ARCC (Air) <http://www.jrcc.pf>
MRCC of French Guiana in Cayenne
MRCC Nouvelle-Calédonie in Nouméa: Pacific Ocean
SAR station of Mayotte, Indian Ocean
SAR station of Saint-Pierre-et-Miquelon: North-western Atlantic Ocean