RULE Lab
Start-line bias — boat (committee) end favoured
When the committee end is upwind, the boat starting there reaches the mark first.
The committee (boat) end sits upwind of the pin, so it's the favoured end. The green boat off the committee end has less distance to the windward mark and lays it first; the red (pin) boat rounds about 1.3 seconds — some four boat lengths — later. It's the mirror of the pin-favoured case — toggle the Start-line bias arrow to confirm which end is favoured, then drag a mark or turn the wind and watch the favoured end flip.
Play this on the board
Opens the animation on the boat-length grid — scrub it, edit it, or use it as a starting point. Free, no account needed.
startbiasfavoured endcommitteekinematictactics
How it interacts with other rules
- Rule Lab — Start-line bias — favoured end wins · see also
The pin-favoured mirror of this.
- Rule 18.1 — No Room to Barge at the Start · see also
Crowding the committee-boat end.