Julien did really no action to avoid. Isn't it to consider? But if you think it is not, than at least the 13 of casino is to exonerate by 64.1 through the 15 of nuuk.
At 10:16 nuuk finished tack and at that point casinos best to keep clear is tacking (he cant anticipate, that nuuk will bear further...). Even enough room to Julien, without the boost of the collision with nuuk and maybe a little reaction of Julien, there would be no contact between these boats.
nuuk is exonerated through the 360
the other boats are exonerated through the 15 of nuuk
i stay with a 'maybe' 11 for Julien (because no reaction at all and much bearing before the sit)
About second case:
TiGER wrote:Even if you go for 152 TWA i would go for 154-156 which would comply with the definition of proper course on a downwind:
that doesnt suit to the situation, because there was a contact and room between both boats was shrinking. It could not be, that casino sailed higher than you.
Also after contact you jibe and it looks like you are above layline, or?
I tend to a 11/17 now.