No. When Red reaches the zone she is clear ahead and is right of way boat according to rule 12 and Blue shall give mark-room to Red according to rule 18.2(b). When Red bears away and slows down she is not longer sailing her proper course, which is not close to the mark. By doing so Red becomes a windward overlap to Blue and shall keep clear according to rule 11. Because Red is not sailing inside her mark-room, she is not longer protected by rule 18.2(b) and the break of rule 11 is not exonerated by rule 21 .