TractracUK
The TracTrac App
The TracTrac Race Viewer App brings sailing to life like never before, combining live race action with powerful performance data, precise course information, and real-time safety oversight. Built by TracTrac, it delivers professional-grade insight for sailors, coaches, race officials, safety teams, and fans alike.
Whether you’re following racing live or replaying it after the finish, the app transforms raw GPS data into a clear, engaging story of the race.
What you can expect
Live Race Tracking in the Race Viewer
Watch races unfold in real time with smooth, interactive maps showing every boat’s position and performance. Follow the whole fleet or focus on individual boats to explore the detail that matters most.
Performance Data – Explained Simply
The TracTrac App displays key sailing metrics that show not just where boats are, but how well they are sailing:
COG (Course Over Ground) – The true direction a boat is travelling across the water, accounting for wind, tide, and leeway.
Heading – The direction the bow is pointing, helping reveal tidal influence when compared to COG.
SOG (Speed Over Ground) – The boat’s actual speed across the ground, including tidal effects.
VMG (Velocity Made Good) – How efficiently a boat is sailing toward the next mark.
DTL (Distance to Line) – Displays each boat’s distance to the start line at 00:00. Boats behind the line appear in green, while boats over the line are shown in red, giving an immediate, objective view of the start.
Distance to First – Shows how far each boat is behind or ahead of the race leader.
Overall Race Distance – The total distance sailed by each boat during the race.
Places Gained & Lost – Tracks position changes throughout the race, highlighting key moments of progress or loss.
Start Line Tools
A dedicated suite of tools designed to bring clarity and fairness to the most critical moment of any race.
Live Distance to Line (DTL) with instant identification of OCS boats
Exact Start Line Length to confirm correct setup for fleet size
Line Bias Display showing whether the pin or the Committee boat end is favoured
Start Line Geometry Overlay with precise positioning of the pin and committee boat
Course Geometry & Race Setup
The TracTrac App displays the complete course geometry, including the exact position, distance, and bearing of every mark.
View real-time distance and bearing to each mark
Understand leg lengths and course shape at a glance
Support accurate course setting and transparent race management
Safety & Race Management
Safety teams and race management gain a clear, real-time overview of the fleet at all times.
Monitor who is afloat throughout the race, with live position updates for every boat
Instantly see who has retired, helping safety teams focus resources where they are most needed
Maintain a clear picture of fleet spread, separation, and remaining boats on the course
Support faster, more informed decision-making during incidents, abandonments, or deteriorating conditions
This live visibility enhances safety, reduces uncertainty, and gives both on-water teams and race control greater confidence in managing the fleet.
Race Replay & Analysis
Rewind and replay races with full data and course overlays. Analyse starts, mark roundings, tactical decisions, penalties, and finishes—ideal for sailor development, coaching debriefs, officiating review, and post-incident analysis.
Clear, Intuitive Visuals
All information is presented using clean, easy-to-read graphics, making complex race scenarios accessible to sailors, officials, and spectators alike.
Designed for Everyone Involved
Sailors gain deeper insight into performance and strategy
Coaches unlock powerful post-race debrief tools
Race officials & safety teams benefit from objective, time-stamped race data
Fans & families enjoy a front-row seat to the action
A New Way to Experience Racing
The TracTrac App doesn’t just show positions—it explains and protects the race. From start-line clarity to full-course visibility and safety oversight, it delivers a clearer, fairer, and more confident way to experience sailing—live and on demand.
