The conditions for redress (per RRS 62.1) are that a boat's score in a race or series has been, or may be, through no fault of her own, made significantly worse by:
- an improper action of race committee...,
- injury or physical damage because of the action of a boat that was breaking a rule of Part 2...,
- giving help... in compliance with rule 1.1, or
- an action of a boat, or member of her crew that resulted in a penalty under rule 2, or ... rule 69.2(c).
Therefore (working backwards) in the context of a black flag being properly displayed:
d. If a boat is forced into the triangle by the unsportsmanlike action of another boat (such as getting deliberately rammed from behind and pushed over the line), and the other boat is penalized under RRS 2 - Fair Sailing, then she may be entitled to redress. She may also be exonerated under RRS 64.1(a).
c. If a boat enters the triangle to render assistance to a person or vessel in danger, then she breaks RRS 30.3 and is disqualified, but would be entitled to redress. See ISAF Case 20.
b. If a boat is forced into the triangle by injury or damage caused by another boat breaking a rule, then she may be entitled to redress, but such a situation is difficult to envision. Note that a boat is not entitled to redress simply because another boat breaks a rule to her disadvantage. That is just her bad luck. If, for example a starboard-tack boat is forced across the line to avoid contact with a port-tack boat, she is not entitled to redress. She might be exonerated under RRS 64.1(a), but that would require a protest, not a redress request. Even then, however, she must still restart. ISAF Case 28 speaks to this obligation.
a. That brings us to improper actions of Race Committee (et. al.), which I think was the intent of the original question. There are a few errors Race committee can make:
- If the race is postponed or abandoned before the starting signal (in which a boat was in the triangle) and subsequently restarted, and RC scores the boat BFD, then protest committee may grant redress (probably her finishing position).
- If a boat believes RC misidentified her (that is, she was not in the triangle) then she may request redress. Note however, that if RC posts the boat's sail number after a general recall or abandonment (after the starting signal) before restarting, she may not sail but may still request redress.
- If RC recalls/abandons a race and restarts, but does not post a boat's sail number, and she sails (despite having been recorded in the triangle) and RC scores her DNE, that is redressable, but only to the extent of scoring her BFD instead.
ISAF Case 96 is the most directly relevant case to this matter. Case 65 is applicable, but not relevant to redress. US Sailing Appeal 96 isn't directly applicable, but if you substitute "black flag" for "z flag", the outcome is the same. ISAF Case 111 is very similar.
I hope that helps,
Eric