CALL UMP 43        

Definitions Mark-Room

Question 1
When is a boat entitled to mark-room sailing ‘to the mark’?

Answer 1
A boat entitled to mark-room is sailing ‘to the mark’ when she is sailing a course towards the mark, that will leave the mark on the required side, until she reaches a position where she becomes ‘at the mark’.

Question 2
When does a boat sailing ‘to the mark’ become ‘at the mark’?

Answer 2
A boat that is sailing ‘to the mark’ will be ‘at the mark’ when one or more of the following conditions apply:
(a) She is no longer able to alter course, in a seamanlike way, towards the mark and pass it on the wrong side.
(b) Any part of her hull overlaps the mark and she is closer than half of her hull length to the mark.
(c) She reaches a position where she would usually alter course to round or pass the mark on the required side in order to start sailing the next leg of the course.