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2026-07-20 WoW
WoW · Critical Mass
Course Plot
Trim finish
Maneuver Analysis
Maneuver log
Polar Performance
% of target speed by point of sail
Target curves shown
J/80 Race Coach

Data note: this race had a ~90-minute logger dropout (dead battery, ~19:00–20:29 UTC). Everything below reflects only the data from ~20:43 UTC onward — if the boat's early upwind legs or first maneuvers happened before the dropout, they're not captured here.

True wind conditions

Tacks and gybes

Upwind performance

Power and boat handling

Boat trim

Comparison with other races

Coaching priorities

  1. Tack recovery time (high confidence). Tacks were quick to execute (7.8 s avg) but slow to get back to speed (7.2 s avg recovery, some as long as 19 s). Action: focus the next tacking drill specifically on the acceleration phase immediately after the boat comes out of the turn, not just the turn itself.
  2. Tack angle consistency (high confidence). The tightest tack (74° swing) lost only 19%; the widest ones (109–133°) lost 50–58%. Action: aim to keep every tack's total heading swing under ~90° — the 74° tack is this race's own benchmark to repeat.
  3. Upwind boat speed vs. target (medium confidence). Angle was close to optimal (43.2° vs. 38.3° target) but boat speed was still only 75.3% of target — the shortfall here looks more like raw speed than angle. Action: check crew weight placement and sail trim in the 13–14 kn range specifically, since angle wasn't the limiting factor this time.