This simple concept followed the direct link with the nautical bearings that are used while tracking routes by sailors (or captains) when at sea. This analogy provides the work “direction” and is chosen by the need to represent graphically the two major classes of boats currently recognised in sailing. This is 1/3 of the concept : two major directions 10 to -10º simulate bigger cruise classes and 60 to – 60º simulate other easier and flatter categories.
