Sail GP Great Britain crash into Japan

Against NZ I think that Japan are only restricted on proper course on the final leg if they are overlapped with NZ.  They can definitely go above and try and roll them to windward when they are behind.  They are following behind  and going below them and faster as NZ lost so much speed in the double tube.  there are two attempts by NZ to bear away and they seem to skid sideways into the path of Japan.  It looks like the foul is called on the first one of these?

Only when they become overlapped is the leeward boats proper course relevant is my view of it.

Sometimes you get penalised and don’t agree with it.  That is part of sport.   The idea that you can umpire on the water boats moving at this speed is fanciful.   The last thing we want is more fast moving difficult to manoeuvre boats getting in the way of each other!  Clearly the data is being sent to highly experienced people who have helped develop the playbook that the sailors are using.  It is competition and people will have different views and will want rules bent in certain ways.  The famous windward mark incident in Denmark between GB and Japan was ruled in favour of the boat which arrived at the zone first which is the spirit and intention of the rule as I see it.  

I am always amazed that they don’t have more incidents at the leeward mark when they all arrive together.   I think the whole thing is intrinsically unsafe which helps it be a spectacle to watch.  

Are we looking at the same video?

https://www.youtube.com/watch?v=9drboibspaM&ab_channel=SailGP

From 00:00 on this video, every single boat apart from Spain are overlapped to windward of Japan. Japan then holds that same course for 8 seconds before starting to bear away slowly. At 10 seconds GBR hit Japan. 

Wheres the ambiguity? GBR had 10 seconds to respond and did nothing. Japan don't have to anticipate GBR hitting them until its apparent that GBR aren't going to avoid. Which Japan do at the 9 second mark

I think the judging has been fine. I'm not a fan of the port inside boat getting mark room at the top but I can see why its there to make it safe.

The now infamous Ainslie v Outeridge windward mark incident was a prime example. Ainslie was penalised despite being on starboard and outside of the 3 lengths zone so the only way he could realistically have avoided that was to tack onto port and sail to the wrong mark when JPN was still perhaps 10 lengths away!

Similarly the incident on the last leg of Race 4 in Australia. Windward boat was penalised for failing to respond quickly enough to a luff from a leeward boat gaining an overlap from behind then sailing above their proper course. Again the only way they could have avoided this was to alter course whilst they still had right of way.

And whilst I agree that Ainslie 100% caused the biggest crash yet, it is equally apparent that he absolutely didn't see JPN to leeward whereas they had perfect visibility to windward and every opportunity to bear away and avoid or at least mitigate the effects of the collision.

I'm aware that the RRS are re-written for this event, but they haven't deleted rules 14, 15 and 16 which never seem to be even considered by the umpires, let alone applied. It does look for all the world like all the umpires do is measure distance between boats then apply Port/Starboard or Windward/Leeward with no regard to when or how ROW was established.

Maybe it would be better if there were actual jury boats on the water with a better feel for the positioning of the boats, and keep the umpire as a fall back using the tech to help clarify specific points like overlaps and distance to marks when there was doubt. Like the way cricket does things?