Session 1

Sailing activity by Frederik Valcke on 09.07.2026

Analytics & Coaching

Upwind speed

	Speed over ground [kn]	Velocity made good to windward (VMG) [kn]	Angle to the wind
Overall	14.75 kn	10.5 kn	43.93
Starboard tack	15.23 kn	—	42.65
Port tack	14.24 kn	—	45.27

Tacking

During the upwind legs, 5 tacks were analysed.

Tack angle

The tack angle is the change in heading through a tack — the angle between the course sailed before and after the manoeuvre. A smaller angle means a tighter, more efficient tack that keeps the boat closer to the wind, while a larger angle indicates more heading was lost during the turn. The box shows the middle 50 % of tacks (Q1–Q3), the line marks the median, and the thin bar spans the full range. Comparing starboard-to-port and port-to-starboard can reveal whether tacking is consistently better on one gybe.