Importing a Polar table

Polar Tables are collections of custom data related to the physical characteristics of a specific vessel which determine sailing performance. These Polar tables can be used to help you achieve maximum sailing performance for your specific vessel by describing how fast a sailing vessel may travel at different wind speeds (TWS), and at different angles to the wind (TWA). Every type of sailing vessel has its own polar table (or VPP, Velocity Prediction Program), calculated from hull shape, weight, rigging, and sail setup. LightHouse 4 uses this polar table information to calculate the fastest course, based on the current wind speed and direction. Polar data for over 500 popular sailing hulls is preloaded into LightHouse 4. If Polar data for your specific vessel is not preloaded, you can create your own Polar table in csv format and import it into LightHouse 4.

Typically, Polar data is provided by the boat manufacturer - refer to the manufacturer for more information.

Polar table ImportingPolar tables can be imported via the chart app Laylines settings menu and from the Boat details menu accessed from the Homescreen.

A Polar table template is available to download from the Raymarine website, which can be used as a starting point for your custom Polar table: https://www.raymarine.com/en-us/learning/online-guides/polar-performance-data

  1. Select the Sail performance button and choose Polar from the pop-over menu.

    If this is the first time a polar has been selected or imported, the Select polar menu is displayed.

    If a polar has already been selected or imported, select the Polar button instead to open the Select polar menu.

  2. Select Import polar.
  3. Browse to the csv file on your memory card.
  4. Select the csv file.

    You will be returned to the Select polar menu and the My Polars option should be available at the top of the list. The My polars option will be suffixed with the number of imported polars on the display.

  5. Select My Polars.
  6. Select the polar you just imported.
  7. Select Activate polar from the pop-over menu.

The imported polar table will now be used.