Reason for deleting Case 80: Under new rule A5, if the race committee observes a boat make an error in sailing the course, it may now score her NSC without a hearing. That new rule makes the case unnecessary.

When a boat entitled to mark-room under rule 18.2(a)(2) passes head to wind, rule 18.2(a)(2) ceases to apply and she must comply with the applicable rule of Section A.

When a finishing line is laid so nearly in line with the last leg that it cannot be determined which is the correct way to cross it in order to finish according to the definition, a boat may cross the line in either direction and her finish is to be recorded accordingly.

Repeated sail trimming with a competitor's torso outside the lifelines is not permitted

If a racing rule is not one of the rules listed in rule 86.1(c), class rules are not permitted to change it. If a class rule attempts to change such a rule, that class rule is not valid and does not apply.

A right-of-way boat need not act to avoid contact until it is clear that the other boat is not keeping clear.

A boat may avoid contact and yet fail to keep clear.

Except on a windsurfer or a kiteboard, a competitor may not wear or otherwise attach to his person a beverage container.