Live Coaching

ChartedSails' Live Coaching feature lets coaches follow their sailors on the water in real time, take notes, record lineups, and set up races — all from their phone on the coach boat. When the day is done, everything syncs automatically so the debrief is ready to go.

Starting a Live Session

Live coaching works through groups. To start a live session:

1. Open the ChartedSails app on your phone
2. Go to your group page
3. Tap Schedule Session and set the date and time
4. Your group members will see the scheduled session and can join when they head out

When a live session is active, a red dot and Live indicator appear in the app. All group members who are recording will have their data streamed in real time.

The Live View

From the coach boat, you can see all your boats moving on the map in real time. For each boat, you can see:

• Speed over ground — how fast each boat is moving
• Course over ground — their current heading
• True wind angle — their angle to the wind
• Heel angle — how much the boat is heeling
• Pitch angle — fore-and-aft trim
• Heart rate — if the sailor is wearing a connected sensor

This gives you a complete picture of what's happening on the water without needing to be right next to every boat.

Recording Lineups

Lineups are one of the most powerful coaching tools in ChartedSails. They let you capture a side-by-side comparison of two boats sailing on a parallel course.

How Lineups Work

1. Identify two (or more) boats you want to compare — ideally sailing on the same tack, close together
2. Tap SPEEDTEST in the app and START
3. ChartedSails records the data from both boats, averaging the performance numbers in real time
4. Tap Stop when you're satisfied with the sample
5. Save the lineup with a descriptive name (e.g., "Boat 7 vs Boat 12 — upwind port tack")

The lineup captures averaged speed, VMG, wind angle, heel, and other metrics for both boats over that window. Because the data is averaged over several seconds, it filters out momentary fluctuations and gives you a reliable comparison.

Using Lineups in Debriefs

Saved lineups appear in the session data and are available during the debrief. They provide concrete, objective data to support coaching points — instead of "I think boat 7 was pointing higher," you can show exactly how much higher, and whether that translated into better or worse VMG.

Coach Notes and Races

During the live session, coaches have a dedicated view with tools to:

• Add comments — tag moments on the timeline with observations ("good shift response by boat 3," "boat 5 late to gybe at the gate")
• Define races — mark start times and legs directly from the coach boat, so the race structure is ready for analysis
• Review lineups — scroll back through the lineups you've recorded during the day

End of Day: Automatic Sync

When sailors finish for the day and return to shore, the coach clicks 'End Session' and all the phones automatically upload the full-resolution track data to ChartedSails. The live data (which is lower resolution for real-time streaming) is replaced by the detailed recorded data.

This means the debrief session has the best possible data quality — full-resolution tracks, plus the coach's notes, races, and lineups — all organized and ready to review.

Running an Effective Debrief

With live coaching data in hand, here's how to run a productive debrief:

1. Start with the big picture — use the session report to review overall performance and conditions
2. Walk through 3–5 key moments — use your notes and the timeline to jump to teaching moments
3. Show the lineups — let the data speak for itself when comparing boat performance
4. Replay critical situations — use the track replay to show tactical decisions in context
5. Keep it focused — better to cover a few points well than to rush through everything
6. End with action items — give each sailor or boat specific things to work on

For Large Events and Clinics

For coaching clinics with many boats, live coaching scales well:

• Have everyone join the same group before the event
• Schedule the session in advance so all boats are auto-assigned
• Use loaner GPS devices (like Vakaros or Velocitek) for boats that don't have their own
• The coach boat sees all boats on the map, regardless of how many are participating

Pro Tip

The most effective coaches use live coaching not just for observation, but for real-time intervention. When you see something on the live view — a boat with too much heel, a boat that's slow out of a tack — you can radio them immediately with specific, data-backed feedback.

Continue to using ChartedSails with AI to explore your data in new ways with AI-powered analysis.