Section A
RIGHT OF WAY
A boat has right of way over another boat when the other boat is required to keep clear of her.  However, some rules in Sections B, C and D limit the actions of a right-of-way boat.
10
ON OPPOSITE TACKS
When are on opposite tacks, a port-tack boat shall keep clear of a starboard-tack boat.
11
ON THE SAME TACK, OVERLAPPED
When boats are on the same tack and overlapped, a windward boat shall keep clear of a leeward boat.
12
ON THE SAME TACK, NOT OVERLAPPED
When boats are on the same tack and not overlapped, a boat clear astern shall keep clear of a boat clear ahead.
13
WHILE TACKING
After a boat passes head to wind, she shall keep clear of other boats until she is on a close-hauled course.  During that time rules 10, 11 and 12 do not apply. If two boats are subject to this rule at the same time, the one on the other's port side or the one astern shall keep clear.
Section B
GENERAL LIMITATIONS
14
AVOIDING CONTACT
A boat shall avoid contact with another boat if reasonably possible.  However, a right-of-way boat or one entitled to room or mark-room
  1. need not act to avoid contact until it is clear that the other boat is not keeping clear or giving room or mark-room, and
  2. shall be exonerated if she breaks this rule and the contact does not cause damage or injury.
15
ACQUIRING RIGHT OF WAY
When a boat acquires right of way, she shall initially give the other boat room to keep clear, unless she acquires right of way because of the other boat's actions.
16
CHANGING COURSE
16.1
When a right-of-way boat changes course, she shall give the other boat room to keep clear.
16.2
In addition, when after the starting signal a port-tack boat is keeping clear by sailing to pass astern of a starboard-tack boat, the starboard-tack boat shall not change course if as a result the port-tack boat would immediately need to change course to continue keeping clear.
17
ON THE SAME TACK; PROPER COURSE
If a boat clear astern becomes overlapped within two of her hull lengths to leeward of a boat on the same tack, she shall not sail above her proper course while they remain on the same tack and overlapped within that distance, unless in doing so she promptly sails astern of the other boat. This rule does not apply if the overlap begins while the windward boat is required by rule 13 to keep clear.
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