Changes to the Definitions and the Rules of Parts 1, 2, 3 and 4

• C2.1 The definition Finish is changed to:
  • Finish A boat finishes when, after her starting signal, any part of her hull crosses the finishing line from the course side after completing any penalties. However, when penalties are cancelled under rule C7.2(d) after one or both boats have finished each shall be recorded as finished when she crossed the line. A boat has not finished if she continues to sail the course . A5 K1 K3
• C2.2 The definition Mark-Room is changed to:
  • Mark-Room Room for a boat to sail her proper course to round or pass the mark , and Room to pass a finishing mark after finishing . E1 E3 E4 E6 E7 E8 K4 K5 K6
• C2.3 Add to the definition proper course : 'A boat taking a penalty or manoeuvring to take a penalty is not sailing a proper course.' E1 E7 E8 J1 J2 K4 K5 K6 N9
• C2.4 In the definitions Zone the distance is changed to two hull lengths.
• C2.5 Add new rule 7 to part 1:
  • 7 Last Point Of Certainty
  • The umpires will assume that the state of a boat, or her relationship to another boat, has not changed, until they are certain that it has changed.
• C2.6 Rule 13 is changed to:
  • 13 While Tacking Or gybing
  • 13.1 After a boat passes head to wind, she shall keep clear of other boats until she is on a close-hauled course.
  • 13.2 After the foot of the mainsail of a boat sailing downwind crosses the centreline she shall keep clear of other boats until her mainsail has filled or she is no longer sailing downwind.
  • 13.3 While rule 13.1 or 13.2 applies, Rules 10 , 11 and 12 do not. However, if two boats are subject to rule 13.1 or 13.2 at the same time, the one on the other’s port side or the one astern shall keep clear .
• C2.7 Rule 16.2 is changed to:
  • 16.2 In addition, when boats on opposite tacks are sailing to a mark that is to windward of them, the starboard-tack boat shall not bear away to a course that is more than ninety degrees from the true wind and that is below her proper course , if as a result the port-tack boat must change course immediately to continue keeping clear .
• C2.8 Rule 17 is deleted.
• C2.9 Rule 18 is changed to:
  • 18 MARK ROOM
  • 18.1 When Rule 18 Applies
    • Rule 18 applies between boats when they are required to leave a mark on the same side and at least one of them is in the zone . However, it does not apply between a boat approaching a mark and one leaving it. Rule 18 no longer applies between boats when the boat entitled to mark-room is on the next leg and the mark is astern of her.
  • 18.2 Giving Mark-Room
    • (a) When the first boat reaches the zone ,
      • (1) if boats are overlapped , the outside boat at that moment shall thereafter give the inside boat mark-room .
      • (2) if boats are not overlapped , the boat that has not reached the zone shall thereafter give mark-room .
    • (b) If the boat entitled to mark-room leaves the zone , the entitlement to mark-room ceases and rule 18.2(a) is applied again if required based on the relationship of the boats at the time rule 18.2(a) is re-applied.
    • (C) If a boat obtained an inside overlapped and, from the time the overlapped began, the outside boat is unable to give mark-room , rule 18.2(a) does not apply between them.
  • 18.3 Tacking or Gybing
    • (a) If mark-room for a boat includes a change of tack , such tack or gybe shall be done no faster than a tack or gybe to sail her proper course .
    • (b) When an inside overlapped right-of-way boat must change tack at a mark to sail her proper course , until she changes tack she shall sail no farther from the mark than needed to sail that course. Rule 18.3(b) does not apply at a gate mark or a finishing mark and a boat shall be exonerated for breaking this rule if the course of another boat was not affected before the boat changed tack .
• C2.10 Rule 20.4(a) is changed to:
  • (a) The following arm signals by the helmsperson are required in addition to the hails:
    • (1) for 'room to tack', repeatedly and clearly pointing to windward; and
    • (2) for 'You tack', repeatedly and clearly pointing at the other boat and waving the arm to windward.
• C2.11 Rule 21.3 is deleted.
• C2.12 Rule 23.1 is changed to:
  • 23.1 If reasonably possible, a boat not racing shall not interfere with a boat that is racing or an umpire boat.
• C2.13 Add new rule 23.3:
  • 23.2 When boats in different matches meet, any change of course by either boat shall be consistent with complying with a rule or trying to win her own match.
• C2.14 Rule 27.2 is changed to:
  • 27.2 No later than the warning signal, the race committee may move a starting mark .
• C2.15 Rule 31 is changed to:
  • 31 Touching A Mark
  • While racing , neither the crew nor any part of a boat's hull shall touch a starting mark before starting , a mark that begins, bounds or ends the leg of the course on which she is sailing, or a finishing mark after finishing . In addition, while racing , a boat shall not touch a race committee vessel that is also a mark .
• C2.16 Add new rule 41(e):
  • (e) help to recover from the water and return on board a crew member, provided the return on board is at the approximate location of the recovery.
• C2.17 Rule 42 shall also apply between the warning and preparatory signals.
• C2.18 Rule 42.2(d) is changed to:
  • (d) sculling: repeated movement of the helm to propel the boat forward;