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VeSim – Vessel Simulatior

VeSim – Vessel Simulatior

  • The Vessel Simulator, VeSim is a time-domain analysis tool for simulation of ships in calm water and for studies of manoeuver performance in a seaway with variable heading and speed.
  • VeSim is being developed by SINTEF Ocean and have been applied by Kongsberg Maritime in different research- and commercial projects during the past decade.
  • VeSim combines maneuvering and seakeeping into a common simulation environment.
  • Traditionally, the two subjects have been treated separately. Maneuvering has been simulated for calm water only whilst seakeeping has been studied at constant forward speed and heading.
  • This unified hydrodynamic formulation linking together the two subjects, makes it possible to apply VeSim in performance evaluations for a variety of operations both for calm water as well as specific maneuvers in rough seas.

Physical modelling

  • The external forces from waves, wind and current can be modeled, including effects such as short-crested irregular waves and motion responses from double peaked waves spectra representing local wind sea and distant swells.
  • VeSim simulates forces from propellers and rudders, tunnel thrusters and azimuthing propeller systems and can model the loss effects due to ventilation (aeration), hull interaction and interaction between propulsor.
  • The hydrodynamic characteristics of Kongsberg’s propulsors and motion control devices are available through a separate ‘propulsion library’. When combined with a given hull geometry, the resulting performance for a variety of propulsion arrangements and maneuvering devices can be studied.
  • Typical sensors onboard a ship, such as GPS, MRU and gyrocompass are also modelled.