MariSim is a group of simulation applications specifically related to Navy and Maritime domain. MariSim consists of the following simulation environments.

• • • • NSTMSS 

      • Navigation Safety

      • Strait Traffic Monitoring Simulation (STMS)

      • Maritime Border Surveillance Using Unmanned Surface Vehicles

NSTMSS, Naval Surface Tactical Maneuvering Simulation (NSTMSS), conceptually is a distributed virtual environment, where a group of players controls the virtual frigates (either Meko or Knox class) in real time and some players behave as tactical players that command the groups of the frigates. All shares a common virtual environment, which its environment characteristics (e.g., time of day) and parameters (e.g., the wind direction) are forced by an environment application, obeying a common scenario that is distributed (e.g., role casting), controlled (e.g., injection messages), and monitored by an exercise planner. Technically, NSTMSS is a High Level Architecture (HLA) based distributed simulation system that is composed of 3-Dimensional ship-handling simulators, a tactical level simulation of operational area, a virtual environment manager, and simulation management processes. It has been developed by using the concepts of HLA, which provides a structural basis for interoperability and reusability. NavySim provides a networked virtual environment test-bed for naval surface actions in which new formations can be evaluated and tested as well as the present ones can be practiced and analyzed. A potential application is training, where naval college cadets can practice formations (see: Developing an HLA Based Naval Maneuvering Simulation, 2005).

Navigation Safety is an agent-based simulation to demonstrate the capabilities of a DeCoAgent in a patrol mission carried by autonomous unmanned surface vehicles.