RULE 18.2 AND MARK ROOM

• New definition — Mark Room. A boat entitled to Mark Room gets room to sail to the mark and
then room to round on her proper course.

• Lock In/Lock Out provision same as in old rule — clear ahead at zone or overlapped at zone gets
Mark Room throughout her rounding even if overlap situation changes.

• An outside or clear astern boat at the zone is only required to give Mark Room (no change in
the right of way):

If the inside/clear ahead boat has right of way she can make a tactical approach.
Otherwise, she only gets room to sail to the mark.

• Doubt about overlaps resolved as in old Rule 18.



So, I'd say that If the Starboard boat WAS NOT at the 3 zone circle first she needed to give mark room -- but not as a tactical rounding.


Had the scenario been that they all wanted to round the left-hand mark ... I think that Starboard would have had an inside overlap AND been the right-of-way boat and would have been allowed mark room in a seaman like (tactical) rounding.