Mark Room

Two boats on the same tack approach a mark to be left to port. Red is the windward boat, and she is overlapped on the inside of Blue when the first of them reaches the zone. Red hails, “I need mark-room.” Blue replies, “Rights,” and continues around the mark. Red then sails her normal rounding, Blue is forced to sail wide, and Blue protests.

Under the 2025-2028 rules, who is entitled to mark-room? Does Blue have grounds to protest Red?