While these rules are very basic and there exist many situations where other rules supersede these rules, these are the biggies everyone should know by heart.

1. Port keeps clear of Starboard.
   
   
2. Windward keeps clear of leeward.
   
   
3. The boat astern keeps clear of the boat ahead.
   
   
4. A boat Tacking or Jibing keeps clear of one that is not.
   
   
5. Avoid Collisions.
   
   
6. If you gain right of way or change course, give the other boat time to keep clear.
   
   
7. The inside boat(s) at two boat lengths from the mark is entitled to room to round the mark.
   
   
8. A boat that is backing up or not racing keeps clear.
   
   
9. If you have violated a rule, take a penalty.
   
   
10. It's better to give way than to spend hours in the protest room.