Answer of the Week

Quiz 19 Answer

Boat W's protest is disallowed. The 16-foot powerboat ranks as both a "mark” and an "obstruction" to the 18-foot boats (see the definitions Mark and Obstruction). The preamble to Part 2, Section C, At Marks and Obstructions, states that the rules of Section C, which include rule 18, Mark-Room, and rule 19, Room to Pass an Obstruction, do not apply "at a starting mark surrounded by navigable water." Therefore the situation is governed by the rules of Part 2, Sections A and B.

L becomes overlapped to leeward from clear astern of W. Therefore, rule 17, On the Same Tack; Proper Course, requires her to not sail above her proper course. Before the starting signal L has no proper course (see the definition Proper Course); therefore she is free to sail up to head to wind, provided that when she changes course she gives W room to keep clear (rule 16.1, Changing Course).

After the starting signal, L is required to not sail above her proper course.
In this case her "proper course" (the course she would choose in order to get to the first mark as soon as possible in the absence of W is to luff head to wind, coast past the powerboat and then bear away to a close-hauled course (see the definition Proper Course). L sails no higher than this course, and therefore does not break rule 17. And while she is changing course, L gives W room to keep clear under rule 16.1 as demonstrated by W's performance. W correctly keeps clear under rule 11, On the Same Tack, Overlapped.