Download it here. The app is searchable in the Google Play Store under Sailboat Owners.
Sorry iPhone/iPad users, we are still waiting on Apple. :(Click the X in the upper right corner to make this go away
They are calculated. The Velocity Prediction Program that is used for ocean racing handicaps (used by US Sailing) includes calculated sea state for each true wind speed. The model gets better all the time and the results are a better reflection of true performance than they used to be.How are polars made? Are they derived from actual conditions or calculations? If they come from actual tests, how can you have the same sea state at wind speeds from low to high?