SailFast™ is a PC-based navigation program used to predict optimum routes for offshore racing and cruising. Weather information is imported directly from Grib forecasts of wind, current and sea level pressure etc. Built-in Gulf of Maine tidal currents are already included.
Taking into account vessel speed characteristics and predicted wind and current, SailFast™ determines the fastest course from start to finish, or between any 2 waypoints. “Isochron” methods are used to find a globally optimized route. A typical isochron solution from start to finish takes about 3-5 minutes to compute.
SailFast™ predicts vessel speed using standard polar diagram information. A scalable generic polar diagram is also included which may be used when the skipper does not have polars for his boat. Polars for a number of popular boats are also built-in. Various “what-if” capabilities are included to allow the navigator to explore course and weather alternatives. SailFast is a powerful tool to assist with the tactical and strategic decisions that win or lose races.
Learn what SailFast can do for you, ... download our free Demo Version (1 week activation). Also, check out the Offshore Race Examples  to learn more.


  • View Grib file weather forecasts for:
        Wind (10 meter)
        Current, including NOAA RTOFS Gulf Stream
        Pressure (Mean Sea Level)
        500 mb height
        Sea temperature
        Wave height
        Wave height and direction
        Wave period
  • Easy Grib viewing. Accepts multiple Grib files. No pre-processing required. View both historic and forecast grib data.
  • Directly compare multiple grib models, such as NOAA GFS and Navy NAVGEM and COAMPS (New Version 7)
  • Display a patchwork of mesoscale models and perform optimum routing (New Version 7)
  • Tool to create Saildocs Grib file requests. With internet connection free Grib files may be downloaded directly to your PC without any intermediate email steps.
  • Active and Saved vessel track display with point by point weather and sailing performance data.
  • Use as a local data repeater to view GPS and instrument data, plus ...
        % speed compared to polars
        Computed actual current set & drift. Great for the Gulf Stream! See our App Note.
  • Built-in global base map.
  • Built-in Gulf of Maine tidal currents.
  • Eight sample boat polars: A35, Catalina 22, Beneteau First 36.7, Beneteau First 40.7, Farr 40, J109, Sabre362, Sabre38-2
  • Isochron optimum routing with time steps from 0.25 to 6 hours.
  • User accessible optimum route data file. View detailed data for each segment of an optimum route including apparent and true wind, heading, boat speed, current, and lat lon. It is now easier to follow the suggested routing, plan sail changes and judge actual vs. simulated performance. (New Version 8)
  • What-If Analysis
        User settable racing boundaries
        Alternative course analysis
        Manual override of Grib Wind or Current (temporary, time phased or permanent)
        Add/subtract to Grib Wind speed and/or direction
  • Interface to NMEA 0183 GPS and Wind Instrument data (not required for basic optimum routing operation and Grib viewing)

World Coastline Map

World wide coastline map. Increased detail on zoom in.

Sea Level Pressure

Milli-bars displayed on mouse over. Adjustable isobar contour increments.

Farr 40 Polars

Example of one of the built-in polars. You may customize or scale an existing polar, or input new polars.

Optimum Routing

J109 optimum route Newport to Bermuda. Overlayed on forecasted Wind, Current and Sea Temperature

Gulf Stream

Current (arrows) and sea temperature (color gradient). Using NOAA RTOFS grib forecast.

Wind, MSL Pressure & Rain

Rain can often be used to visualize frontal systems. Mouse over to view high and low pressure center values.

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