1. RS:X Class Briefing

2. 1. Practically no rule 42 ‘ A board shall be propelled only by the action of the wind on the sail, by the action of the water on the hull and by the unassisted actions of the competitor ’ 2. Rule 13 ( no more rule 13.2 – gybing rule) When a board changes tack, watch the sail to be fill on the new tack (normally it is done by the first or second pump) and after that if the board starts to move (the position of the hull at that moment is not important). When a board changes tack, watch the sail to be fill on the new tack (normally it is done by the first or second pump) and after that if the board starts to move (the position of the hull at that moment is not important). 3. No rule 17 The board clear ahead uses this close to a mark to prevent the board clear astern getting an inside overlap board. If board clear astern becomes overlapped leeward of a board on the same tack, she has no luffing limitation. If board clear astern becomes overlapped to leeward of a board on the same tack, she has no luffing limitation.

3. 4. No Zone around the mark. No rule 18.3. Rules 18.1,18.2(b),18.2(c) and 18.4 are changed: The first sentence of rule 18.1 is changed to: The first sentence of rule 18.1 is changed to: ‘ Rule 18 applies between boards when they are required to leave a mark on the same side and at least one of them is about to round or pass it ’. The definition of ‘ is: The definition of ‘ about to round or pass’ is: A board is about to round or pass a mark when her proper course is to begin to manoeuvre to round or pass it’.

4. Downwind mark – the beginning of a manoeuvre in planning condition

5. In planning condition the distance between the leeward mark and the place, where the manoeuvre begins, can be more than 6 - 8 board lengths (depends from the wind and board speeds). In planning condition the distance between the leeward mark and the place, where the manoeuvre begins, can be more than 6 - 8 board lengths (depends from the wind and board speeds). In slalom races it can be more than 10 lengths. During the manoeuvre in planning condition, the competitor is doing his (her) best to increase or maintain the speed and to stay on the plane. During the manoeuvre in planning condition, the competitor is doing his (her) best to increase or maintain the speed and to stay on the plane. To do this the line that the board takes has to be, as close as possible, to the ideally symmetrical arc. The competitor initiates the manoeuvre by depressing the downwind rail (edge of the board).

6. Section C rules (rules 18,19 and 20) do not apply at a starting mark surrounded by navigable water or its anchor line from the time boards are approaching them to start until they have passed them (Preamble to Section C) Rule 18 ‘Mark-Room Rule’ applies between boards required to leave a mark on the same side and at least for one of them the proper course is to begin the manoeuvre to round or pass the mark. However, it does not apply: between boards on opposite tacks on a beat to windward;

7. between boards on opposite tacks when the proper course for one is to tack at the mark between a board approaching a mark and a board leaving it If the mark is a continuing obstruction, in which case rule 19.2 applies.

8. Watch for: the change of the position of the competitor’s feet, the change of the position of the competitor’s feet, the change of his body position and for the change of his body position and for any alternation in the position of the sail and board any alternation in the position of the sail and board to fix the moment when rule 18 starts to apply. In not planning condition the beginning of the manoeuvre is close to the mark and the manoeuvre is simpler. The manoeuvre starts when the competitor initiates a gybe by depressing the upwind rail combined with a big sail movement forwards. The competitor strives for fast releasing of the boom and filling the sail on the new tack. Watch the sail, not the board.

9. In other words rule 18 applies: leeward mark – always; at the gate marks – always for the boards rounding or passing the same mark on the same side; at the windward mark - if either board passes head to wind (R18.2(c)) the outside overlap board shall then give the inside board mark- room - R18.2(a).

10. The obligation to give mark-room under rule 18 stops applying: When the board entitled to mark-room no longer needs it (compare to when R10 stops to apply), or, if earlier: If either of the boards passes head to wind; If rule 18 stops to apply (see R18.1(a),(b) and (c)).

11. 5. Rule 22.2 Capsized board shall not take an action that hinders another board 6. Rule 23.3 A board shall not sail in the course area defined in the SIs when races are taking place except in her own race

12. 7. Rule 24 When approaching the starting line to start, her sail shall be out of the water and in normal position, except when accidentally capsized A board is capsized when her sail or the competitor is in the water.

13. 8. Rule 31 – Can touch mark, but shall not hold on to it. 9. Turn penalty – one 360 0 turn with no requirement for tacks and gybes. Watch the board, not the sail.

14. 10. Starting In light air boards ‘sit’ on line very early and keep position by backing the sail to move astern; boards ‘sit’ on line very early and keep position by backing the sail to move astern; They can touch the RC boat but not hold on to it; They can touch the RC boat but not hold on to it; Sail must be in normal position. Sail must be in normal position.

15. In planning condition Part of the fleet starts on starboard and the rest - on port tack. The size of these two parts depends from the angle between the starting line and the wind direction; Part of the fleet starts on starboard and the rest - on port tack. The size of these two parts depends from the angle between the starting line and the wind direction; The encounter happened close to the middle of the starting line. The encounter happened close to the middle of the starting line. If there is an incident, take notes for all details connected with possible request for redress - 62.1(e). Also was there a penalty turn on time? Rule 62.1(e) ‘a board that failed to keep clear and caused capsize of the other board’

16. 11. The Upwind The angle between the close-hauled course and the wind direction depends on the wind speed and the waves: Less than 10 Kts – 40-45 0; Less than 10 Kts – 40-45 0; 10-12 Kts and more - 60-70 0; 10-12 Kts and more - 60-70 0; The boards change the direction non-stop (like snake). The boards change the direction non-stop (like snake). Pay attention to your positioning

17. 13. The downwind leg Wind speed 6-8 Kts - 170 0 -190 0 Wind speed 6-8 Kts - 170 0 -190 0 Wind speed 12-22 Kts - 135 0 -225 0 Wind speed 12-22 Kts - 135 0 -225 0 In 15 Kts – 3BL less than 1 sec. In 15 Kts – 3BL less than 1 sec. Pay attention to your positioning

18. 14. FINISH Last sentence of 61.1(a): ‘She shall inform the race committee of her intention to protest immediately after she finishes or retires.’ Not in force for the Medal race.

19. 15. MEDAL RACE (a) Rule 19.1 - no need to do arm signals. (a) Rule 19.1 - no need to do arm signals. (b) Voluntary penalty: (b) Voluntary penalty: a board shall promptly one 360 0 turn with no requirement for tacks and gybes. a board shall promptly one 360 0 turn with no requirement for tacks and gybes. Watch the board, not the sail.

20. c) No need to display a red flag. (d) Rule 31.1 for boards – they can touch mark, but shall not hold on to it. (e) Umpire red flag - one 360 0 turn with no requirement for tacks and gybes.

21. 16. Slalom In planning condition, the competitor initiates the manoeuvre to round the mark by depressing the downwind rail (edge of the board). The attitude of the sail will also change as well the competitor’s body position. In planning condition, the competitor initiates the manoeuvre to round the mark by depressing the downwind rail (edge of the board). The attitude of the sail will also change as well the competitor’s body position. This is the moment when rule 18 starts to apply.

22. During the manoeuvre, the competitor is doing his best to maintain speed and to stay on the plane, so the line that the board takes is close to the ideally symmetrical arc. During the manoeuvre, the competitor is doing his best to maintain speed and to stay on the plane, so the line that the board takes is close to the ideally symmetrical arc. Watch for the change of the competitor’s foot positioning, the change of his body position and for any alternation in the attitude of the sail and board to fix the moment when rule 18 starts to apply.

23. In non-planning condition, the manoeuvre starts when the competitor initiates a gybe by depressing the upwind rail combined with a big sail movement forwards. The competitor strives for fast releasing of the boom and filling the sail on the new tack. In non-planning condition, the manoeuvre starts when the competitor initiates a gybe by depressing the upwind rail combined with a big sail movement forwards. The competitor strives for fast releasing of the boom and filling the sail on the new tack. Watch the sail, not the board.

24. 17. Final Tips In not planning conditions, do not produce wake. It is very difficult for the competitors to keep the balance on the board. In not planning conditions, do not produce wake. It is very difficult for the competitors to keep the balance on the board. In planning conditions their angle is different then the other boats. In planning conditions their angle is different then the other boats. They accelerate very quickly after a tack or gybe. Pay attention to your positioning