Everybody is talking zoom levels, but that is not what this is about. This is about proper prep. There is a video out there with Ian Walker talking about it and he says that they had outlined that atoll as being an 'exclusion zone' for them. This means that in preparing for the leg, Vestas did not do the same. I imagine that if something is marked as an exclusion zone than there is no way it disappears on the nav software. This then begs the question, why isn't headquarters making sure all boats have outlined all potential known hazards? Such as, say.... a fucking island in the middle of there path that is many miles wide and only a meter or two high?