I am trying to put a presentation together in Keynote. Basically, I am looking to see how in Numbers/excel I can? The problem, a ship/platform is moving in a compass direction (360 deg) the relative wind is coming from a compass direction (360 deg) pilot decides to approach said platform from what is the best available direction to give some sort of, if possible, into wind effect. Now I have a 30 degree vector picture (12 for a 360 panorama of the landing ship/platform) I'd like to be able to enter the ship/platform heading where this would give me the best available into wind effect and from there be able to see the picture of what the platform/ship approach will look like? Anybody any ideas where to start?