Live numbers from the Jacanda 3 racing yacht on your wrist, refreshed every 2 seconds through your phone, on three pages: - TARGET: boat speed and true wind angle over their polar targets, each with a gauge that rises when you beat the target. - POLAR: boat speed and VMG as a percentage of the polar. - TACTIC: what the wind shift is worth to the tack you are on, lift or header, and the last 10 minutes of it in a graph. On the boat's Wi-Fi, the numbers come from the boat itself, without internet. A sailing boat or a cloud next to their age says where they came from. For the Jacanda crew: the app needs the team's watch token, typed once in the app's settings in Garmin Connect. Without it, it shows nothing.

Off the boat without Tailscale, the numbers come from the shore at once, never frozen. On the boat Wi-Fi or through Tailscale, from the boat.