Again, like the other zone situation that Artemis was in last week, Japan would have been better served just to sail around the mark and stay outside the zone (keeping it straight up port/starboard). They would have passed Artemis as they slowed in the tack and been gone.
I'm not well versed in the rules so I'll ask a dumb question: if Japan had stayed out of the zone then they wouldn't have had to give room and then there would have been no penalty? They were not very far from being out of the zone, another 5-10 feet and it could have been a very different result.
BTW that took some big ones to pull off!