Team Race - CALL J 05      

Rule 10 On Opposite Tacks
Rule 11 On the Same Tack, Overlapped
Rule 17 On the Same Tack; Proper Course
Rule 18.2(a) Rounding and Passing Marks and Obstructions: Giving Room; Keeping Clear. Overlapped – Basic Rule
Rule D1.1(c) Deletion of Rule 18.4
Definitions Overlap

Question
A and X are overlapped, running on port tack towards a leeward mark to be left to port. When inside the zone A gybes onto starboard and changes course towards X. X is forced to gybe, and A then luffs X away from the mark. X protests. What should the call be?

Answer
At first X is required to give A room to round the mark, and A cannot sail below her proper course unless she gybes (rule 17.2).
When A gybes she acquires right of way and X must now also keep clear. Rules 17.1 and 18.4 do not apply and A may sail above her proper course.
A is entitled to luff from position 3 provided she gives X room to keep clear. No penalty.