ACC Performance Tuner & Polar Chart

The ACC Performance Tuner is a lightweight application designed to help sailors quickly identify the best sail (jib / genoa and spinnaker), TWA and Target Boat Speed for optimum upwind and downwind performance while sailing the ACC class yacht in Vsk5.

This tool calculates the optimal True Wind Angle (TWA) and Target Speed for maximum boat performance, based directly on the in-game ACC polar data for all three sails.

(See in-game ACC Polar Curve images below)

Accurate sail, TWA and Target Speed recommendations are provided for any valid True Wind Speed (TWS) between 8 and 35 knots.

For more information refer to the User Manual

For more information about Vsk5 Polar Charts or building your own polar chart visit the Speed Polars app.