Manta builds your boat's polar diagram from the trips you sail and shows how well she performs on every point of sail.
Polars from your own trips
A polar diagram shows how fast a boat sails at every wind angle and wind speed. Manta builds yours from the trips you actually sail, not from a designer's table.
How it works
Every stretch sailed with the engine off adds data points: wind angle, wind speed and boat speed from your instruments. Manta collects them per boat and draws the polar from them.
What you see
- A line for each wind strength
- Dots on the angles you actually sailed; the line between them is estimated
- How complete the polar is so far
Sailing performance
Manta compares your speed with the polar, on every point of sail. 100 % is a realistic target pace from your boat's own records. From 90 % up counts as well sailed.
Opening the polar chart
Polar diagrams are part of Manta Pro and need your instruments connected: in Settings, open “Connect your plotter” under Instruments. Open your boat's page and tap “Polar chart”.
Questions
What does Manta need to build the polar?
Stretches sailed with the engine off, with wind and speed recorded from your instruments. Connecting them is free; the polar itself is part of Manta Pro.
What do the dots on my polar mean?
Dots mark the angles you actually sailed; the line between them is estimated. The more conditions you sail, the more complete the polar becomes.
How does Manta rate my performance?
100 % is a realistic target pace from your boat's own records. From 90 % up counts as well sailed.
I sail more than one boat. Does each get its own polar?
Yes. Each trip is linked to one of your boats, and the polar follows that link.