Section A - Definitions and Fundamentals
TR CALL A6
Rule 11, On the Same Tack, Overlapped
Rule 18.1, When Rule 18 Applies
Rule 18.2, Giving Mark-Room
Rule 43, Exoneration
Definitions, Mark-Room
Definitions, Zone
Question 1
Y and B are approaching a mark to be left as indicated by the arrows. Rule 17 does not
apply to B. What is the latest time B may luff?
Answer 1
Rule 18 begins to apply when any part of the hull of either boat is in the zone. From
this moment, if B luffs and thereafter has to bear away in order to give Y mark-room,
then B breaks rule 18.2. B does not break rule 18.2 if she is able to luff while giving Y
room to sail to the mark as required by paragraph (a) in the definition Mark-Room. Y
is required to keep clear under rule 11. However, she will be exonerated under rule
43.1(b) if she breaks rule 11 because B fails to give her mark-room.
Question 2
If B has to bear away to give mark-room, when is she required to do so?
Answer 2
B is required to bear away promptly when the first of the boats enters the zone.