Racing Rules of Sailing

D3.1

(a) Each boat finishing a race and not retiring thereafter shall be scored points equal to her finishing place. All other boats shall be scored points equal to the number of boats entitled to race.
(b) When a boat is OCS and does not then either return to start or promptly retire, 10 points shall be added to her score.
(c) When a boat finishes and has not sailed the course, 6 points shall be added to her score, unless rule D3.1(b) applies.
(d) When a boat fails to take a penalty imposed by an umpire at or near the finishing line, she shall be scored as retired.
(e) When a boat is scored as retired after finishing, each boat with a worse finishing place shall be moved up one place.

Definitions in Context

Finish

A boat finishes when, after her starting signal, any part of her hull crosses the finishing line from the course side. However, she has not finished if after crossing the finishing line she

(a) takes a penalty under rule 44.2,
(b) corrects an error in sailing the course made at the line, or
(c) continues to sail the course.

After finishing she need not cross the finishing line completely. The sailing instructions may change the direction in which boats are required to cross the finishing line to finish.

Sail the Course

A boat sails the course when

(a) she starts;
(b) a string representing her track until she finishes, when drawn taut,
- (1) passes each mark of the course for the race on the required side and in the correct order (including the starting marks),
- (2) touches each mark designated in the sailing instructions to be a rounding mark, and
- (3) passes between the marks of a gate from the direction of the course from the previous mark; and then
(c) she finishes.

A mark that does not begin, bound or end the leg the boat is sailing does not have a required side.

Start

A boat starts when, her hull having been entirely on the pre-start side of the starting line at or after her starting signal, and having complied with rule 30.1 if it applies, any part of her hull crosses the starting line from the pre-start side to the course side.