• This system is a real VPP, based on the equilibrium of aerodynamical and hydraulic forces for a pre defined set of TWS (True Wind Speed) and TWA (True WInd Angle).
• Given the complexity of those calculations, it make take up to 30 seconds to produce a set of VPPs. This may increase in case of strong demand. If this happens, we will improve our process to calculate the polars.
• There are about 250 pre-loaded boats that can be used as models. If you do not find your boat in this list, you can pick any other one, close to yours and then change the data and save it as your boat.
• If you do not know the exact data for some fields, you can click on the related « default »
  button » and the field will be set to a defaulted value.
  Most of the missing but required information can be measured during the yearly
  careening of your boat (mostly for keel and rudder measurements).
• As this is the first version of the system, it is possible that the system cannot find some results. If this happens, please notify us and we will investigate why the problem occured.

There are about 470 boat polars (VPP) in the database of polars of Avalon Router. We add polars on demand for the users of Avalon Offshore (mono hull boats).

Those polars are provided free of charge to Avalon Navigation users who are free to use them or not. They are not guaranteed.

If you have your own VPP file(s) you can load them into Avalon. Procedure is described in the users guide.