In the user-controlled mode, the user controls the rudder, the engine and lateral thrusters through a graphic control panel to simulate navigation of a ship. Three simulation modes are available in DynaSim: user-controlled, standard ship certification maneuvers and computer-controlled (autopiloted) maneuvers along prescribed routes. The creation of these additional threads is need-based. Additional independent threads are created when launching ships according to a schedule, when managing tug-ship interactions and when recording/playing a simulation session. With this scheme, synchronization between ships is assured knowing that the threads have the following priorities: synchronization, mathematical model, user interaction and, finally, ship visualization. For each ship simulated in DynaSim, one thread is generated for the mathematical model and another for the ship visualization.
#Capital ship simulator software#
The ship simulator software initially creates one thread for the user interface, one for the environment visualization, one for timing and ship synchronization, and one for tracking relative locations of ships. The multitasking allows simultaneous execution of many threads of the application, and the object-oriented implementation greatly enhances the interaction between threads by passing references to objects (with all their functionalities) rather than a multitude of variables. The object-oriented framework used in conjunction with a multitasking operating system allows modular modeling of the simulation system. This object-oriented paradigm permits easy integration with the visualization module, the user interaction interface, the multitasking operating system (Windows 10) and the simulation/control of multiple ships. The mathematical model is developed with the object-oriented language C#. The DynaSim software is object oriented and is organized in three independent modules: the mathematical model, the ship/environment visualization module and the graphical user interface.
#Capital ship simulator series#
Each component force is modeled using physics-based first principles, model tests, sea trials and Taylor series expansions for interpolations. Forces exerted on each of the components of the ship (hull, propeller, rudder), as well as the interaction and environmental forces, are isolated, and the interaction between these components is also treated separately. The forces acting on the ship are handled in DynaSim in a modular fashion. The motion equations simply balance mass (or moments of inertia) multiplied by each acceleration component with the sum of all hydrodynamic forces (or moments), including environmental and interaction forces. Through a graphical user interface, the simulator enables the user to input the topography of the traffic environment (including local water depth, shorelines, channel widths and depths, restricted water configurations, etc.) and record ships’ motion and interaction.įor each ship, the mathematical model enables accelerated time or real-time solution of the motion based on ship hydrodynamic equations accounting for propulsion forces, as well as resistance and interaction forces due to the environment. This simulator is capable of modeling multiple interacting ships in the presence of waves, wind, currents and obstacles.
#Capital ship simulator Pc#
This effort resulted in a traffic version of DynaSim, a user-friendly, PC Windows-based ship-maneuvering and traffic simulator. has developed a harbor and waterway traffic simulator based on its ship-maneuvering simulator, DynaSim. Originally under a grant from NOAA, Dynaflow Inc. waters resulting in over $100 million in damage each year.Ī marine traffic simulator can help engineers and decision makers to cope with the changing requirements of waterway traffic and keep traffic safe. Bureau of Transportation Statistics, there are more than 6,000 ships involved in accidents in U.S. Increasingly larger ships are utilized, and waterways designed for smaller ships are now handling larger ships, resulting in decreased margins of safety and increased risk of accidents.
cargo is transported at some point by ship through U.S. Over the last 50 years, ship lengths, widths and drafts have doubled and the amount of commerce has tripled such that over 98 percent of all U.S.
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