Green (G) and Yellow (Y) are spinnaker catamarans sailing downwind towards the finish line on starboard tack. They both will need to gybe to finish.
(Position 1) - Green is clear ahead until Yellow establishes an overlap to leeward before either of them reaches the zone (Position 2). Yellow is sailing her proper course as required by RRS 17
At position 3, Y enters the zone directly upwind of the finishing mark (in this case, the signal boat).
Conditions are 12 kts, small chop. Both boat's speed is approximately 15 kts; about 1 boat length every 0.75 seconds.
1) Which boat is the inside boat for the purposes of RRS 18.2(b)?
2) If G is owed mark-room by Y, then must Y gybe immediately?
3) If Y does gybe immediately (Position 4), G subsequently gybes, the overlap is broken and because G has overshot the layline, heads up to round the finish mark and there is contact, does she break RRS 12 or does Y break RRS 18.2(c)(1)?
Finally, does RRS 18.4 apply at a downwind finish which is functionally identical to a gate?