US Sailing’s Performance Packages provide competitive offshore racers with the tools they need to maximize their performance on the water. Using state of the art calculation methods for the collection of measurement data, our Performance Packages are a must-have for any offshore racer interested in getting the most out of their boat in any race.
Performance Packages Facts:
- US Sailing provides custom performance predictions for individual yachts.
- Calculated with the accurate Offshore Racing Rule VPP
- Utilizes ORR or IMS measurement data
- Available for unmodified sisterships of ORR rated production yachts
Performance Packages Includes:
- Tables of performance for wind speeds from 6 to 24 knots (available as electronic files for onboard instrumentation)
- Polar diagrams in both True and Apparent Wind format
- Wally analysis
- Curve of static stability
- Upright hydrostatic calculations
- Instructions for use
The VPP (Velocity Prediction Program) HandyGuide is an abbreviated version of the Performance Package. The HandyGuide features a laminated table of upwind and downwind targets. Calculations for each wind speed include optimum true wind angle, boat speed, apparent wind angle and speed. Order VPP HandyGuide
Race Optimization Package
Big or small genoa? Symmetric or asymmetric spinnaker? How much stability? To answer these questions you must balance together the changes in boat performance and the wind conditions of the race. The Race Optimization Package uses the Offshore Racing Rule velocity prediction program to do just that. An owner can run “virtual” races with a fleet consisting of his current boat, experimental variations of it, as well as competitors boats. Racing the fleet through a variety of wind conditions enables the owner to find which boat fares best against the handicaps for any weather pattern. The biggest variable in the equation, for any given race, is the weather data. In addition to the standard combinations of wind speed and direction, US Sailing has partnered with Commanders Weather to provide race-specific forecasts. Months before the start of any race, predictions will be based on historical data. But as the start grows closer, Commanders Weather can start constructing wind models based on current weather patterns. Race Optimization Package: $300 – Base Price Additional competitor boats and the Commanders forecast can be purchased for an additional fee. To order a Race Optimization Package, please contact Jim Teeters, US Sailing’s Associate Offshore Director, via e-mail at JimTeeters@ussailing.org or via phone at 401-683-0800 x662. View a sample of a Race Optimization Package