1. Basic Rules of Sailboat Sailing
There are three guiding principles that underlie the Racing Rules.  All competitors are expected to compete within the framework of sportsmanship, fair sailing and helping those in danger.  If you’re new to racing, you only need to know 10 basic rules that will handle most situations you’ll encounter on the race course.  As you gain more experience, you’ll learn more about the subtleties and limitations of these and other rules.
The basic rules are summarized below.  A boat has right of way when another boat is required to keep clear.  If you want to read the actual wording of the rule in the rules book, “Racing Rules of Sailing,” just click on the rule number. There are some words in racing that have special meaning and they are identified in italics.
RRS Version

2. Basic Rules of Sailboat Sailing 10 Basic Rules

3. Rule 10 (On Opposite Tack)
When boats approach each other on opposite tacks, the boat on port tack shall keep clear of the boat on starboard tack ( Racing Rule 10 ).  The port-tack boat keeps clear, if the starboard-tack boat does not have to change course to avoid a collision.  If your boom is on the starboard (right) side, you are on port tack; if it’s on the port (left) side, you are on starboard tack

4. Rule 11 (On the Same Tack, Overlapped)
When boats are on the same tack and overlap each other, the windward boat shall keep clear of the leeward boat ( Racing Rule 11 ).  If your boom is on the side next to the other boat, you are the windward boat.   

5. Rule 11 (On the Same Tack, Overlapped)
When boats are on the same tack and overlap each other, the windward boat shall keep clear of the leeward boat ( Racing Rule 11 ).  If your boom is on the side next to the other boat, you are the windward boat.   

6. Rule 12 (On the Same Tack, Not Overlapped)
When boats are on the same tack and don’t overlap each other, a boat that is overtaking from behind shall keep clear of the boat that is clear ahead ( Racing Rule 12 ).  It must change course to avoid running into the back of the other boat.  If the boat from behind continues to overtake the other boat and they become overlapped then the windward-leeward rule switches on where the windward boat must keep clear of the leeward boat.  

7. Rule 13 (While Tacking)
When you’re tacking, you must keep clear of all other boats from the time your boat passes head to wind until it is on a close-hauled course( Racing Rule 13 ).  Look around before you tack to make sure you don’t tack in the way of another boat. 

8. Rule 14 (Avoiding Contact)
You must avoid contact with other boats if possible.  Even if your boat has right of way you must avoid contact, but you don’t need to act until it becomes obvious that the other boat is not going to keep clear ( Racing Rule 14 ).

9. Rule 16 (Changing Course)
Whenever you are the right-of-way boat and want to turn, you must give the other boat a chance to keep clear ( Racing Rule 16 ).  You cannot make an abrupt turn that allows no opportunity for the other boat to stay out of your way.

10. Rule 18 (Mark-Room)
When a boat reaches the three-length zone from a mark, it has to give boats overlapped inside it room to pass the mark ( Racing Rule 18 ).  The outer edge of this zone is three hull lengths from the mark.  This Rule is switched off at starting marks, and between boats on opposite tacks at the windward mark. 

11. Rule 21 (Starting Errors)
If you cross the starting line too soon before the start, you have to go back behind the line and start again.  While going back, you have to keep clear of all boats that have started ( Racing Rule 21 ).  If a boat starts prematurely, the race committee boat displays the code flag for the letter "X" and sounds one blast of a horn   

12. Rule 31 (Touching a Mark)
If you hit a mark while racing, you must take a penalty as soon as possible by making one turn, including one tack and one jibe (or one jibe and one tack) ( Racing Rule 31 ).  While doing your One-Turn Penalty , you must stay clear of all other boats. 

13. Rule 44 (Penalties at the time of an Incident)
If you foul another boat while racing, you must take a penalty as soon as possible by making two turns in the same direction, including two tacks and two jibes ( Racing Rule 44 ).  While doing your Two-Turns Penalty, you must stay clear of all other boats.

14. Coffee break

15. Basic Rules of Sailboat Sailing Definitions

16.  Keep Clear
 Keep Clear – A boat keeps clear of a right-of-way boat
(a) if the right-of-way boat can sail her course with no need to take avoiding action and,
(b) when the boats are overlapped, if the right-of-way boat can also change course in both directions without immediately making contact .

17. Clear Astern and Clear Ahead; Overlap
Clear Astern and Clear Ahead; Overlap – One boat is clear astern of another when her hull and equipment in normal position are behind a line abeam from the aftermost point of the other boat’s hull and equipment in normal position. The other boat is clear ahead. They overlap when neither is clear astern. However, they also overlap when a boat between them overlaps both. These terms always apply to boats on the same tack. They apply to boats on opposite tacks only when rule 18 applies between them or when both boats are sailing more than ninety degrees from the true wind.

18. Clear Astern and Clear Ahead; Overlap

19. Clear Astern and Clear Ahead; Overlap
Overlap - They overlap when neither is clear astern. However, they also overlap when a boat between them overlaps both. 

20. Finish
Finish – A boat finishes when any part of her hull, or crew or equipment in normal position, 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 under rule 28.2 made at the line, or
(c) continues to sail the course .

21. Leeward and Windward
Leeward and Windward – A boat’s leeward side is the side that is or, when she is head to wind, was away from the wind.  However, when sailing by the lee or directly downwind, her leeward side is the side on which her mainsail lies.  The other side is her windward side.  When two boats on the same tack overlap, the one on the leeward side of the other is the leeward boat.  The other is the windward boat. 

22. Mark
Mark – An object the sailing instructions require a boat to leave on a specified side, and a race committee vessel surrounded by navigable water from which the starting or finishing line extends.  An anchor line and or an object attached temporarily or accidentally to a mark are not part of it. 

23. Obstruction
Obstruction – An object that a boat could not pass without changing course substantially, if she were sailing directly towards it and one of her hull lengths from it.  An object that can be safely passed on only one side and an area so designated by the sailing instructions are also obstructions.  However, a boat racing is not an obstruction to other boats unless they are required to keep clear of her, or, if rule 23 applies, avoid her. A vessel under way, including a boat racing, is never continuing obstruction. 

24. Racing
Racing – A boat is racing from her preparatory signal until she finishes and clears the finishing line and marks or retires, or until the race committee signals a general recall, postponement or abandonment. 

25. Tack, Starboard or Port
Tack, Starboard or Port – A boat is on the tack, starboard or port, corresponding to her windward side. 

26. Tack, Starboard or Port
Tack, Port

27. Tack, Starboard or Port
Tack, Starboard

28. Zone
Zone – The area around a mark within a distance of three hull lengths of the boat nearer to it. A boat is in the zone when any part of her hull is in the zone. .

29. Thank you for your attention!