I have a question for your blog.
I had a discussion with some UMP and JDG about situation under rule 18.3. The rule book says "if rule 18.3 applies .. rule 18.2 doesn't". My question is about rule 18.5.
Q: If a boat is under 18.3 and 18.2 is OFF ..is rule 18.5 still applying?
If one part of rule 18.3 switches off rule 18.2 and the "mark room" right, this means rule 18.5 can not be applied also, because it is written "When a boat is taking mark-room to which she is entitled, she shall be exonerated..."
Seems when rule 18.2 is switched off we have to come back at "normal" rules without the exonerations of 18.5. So the boat inside bearing can infringe rule 16 and have no rights at any exoneration...???
I've had a look at the exact wording in rule 18.3: And you're right that, if all the requirements of rule 18.3 are met ( i.e. boats on opposite tacks approaching a mark and one of them changes tack and is subject to rule 13 in the zone when the other is fetching the mark) , then rule 18.2 is switched off.
That means that the tacking boat can not claim mark-room as inside boat and is subject to all other rules. She either becomes row-boat under 11 with restrictions under 14, 15 and 16, and an additional restriction under 18.3. That is, she may not cause the other boat to sail above close-hauled to avoid her or prevent the other boat from passing the mark on the required side.
In this situation she has no "use" for rule 18.5, she never gains mark-room, therefore cannot be exonerated other then by 64.1(c).
She can also become keep clear boat, if the fetching boat becomes overlapped inside her.
Again in that situation all normal rules apply and she does not gain mark-room, therefore again has no "use"for 18.5. She then must keep clear under rule 11.
If the fetching boat establishes an inside overlap, SHE is the boat who is entitled to mark-room. She then also has the "protection" of rule 18.5!
That rule does not state that only mark-room gained from a rule 18.2 is to be considered. No, if a boat taking mark-room to which she is entitled - however she got it -, she shall be exonerated....|
The inside boat is given mark-room in 18.3(b)....
So, in answer to your question; if rule 18.3 is applicable and rule 18.2 is not, rule 18.5 is still applying for the fetching boat that establishes an inside overlap.
All the best,