ROC-Sim is a deployable Remote Operations Centre Simulator that can be integrated into any remote operating centre or networked within a federated simulation environment to enable uncrewed vessel operator training. The system is underpinned by BMT’s high fidelity REMBRANDT simulator and integrated within BMT’s Digital Innovation and Simulation Centre (DISC) at Fareham to provide a networked multi vessel virtual test environment enabling development, testing and assurance of maritime autonomous systems.