A system for monitoring a maritime environment The invention relates to a system (100) for monitoring a maritime environment, the system (100) comprising a plurality of radio detection and ranging devices (101, 103, 105) being configured to perform a synchronous detection of an object in the maritime environment, to transmit a plurality of sensor signals respectively relating to a location of the object in the maritime environment over a communication network(107), and to receive a synchronization signal, each radio detection and ranging device (101, 103, 105) being configured to synchronize its operation according to the synchronization signal,a synchronization source (109) being configured to generate the synchronization signal for synchronizing operations of the plurality of radio detection and ranging devices(101, 103, 105), and to provide the synchronization signal over the communication network (107) to the plurality of radio detection and ranging devices(101, 103, 105),and a processing device (111) being configured to receive the plurality of sensor signals from the plurality of radio detection and ranging devices(101, 103, 105), and to determine the location of the object in the maritime environment upon the basis of the plurality of sensor signals.