RYA Introduction to Radar follows the syllabus of the RYA One Day Radar Course & is also a very handy reference for all who use marine radar sets. The RYA is the governing body representing sailing, windsurfing, motor boating, power boat racing & personal watercraft, at sea & on inland waters. It works for the good of all who enjoy these activities, campaigning for their interests at local, regional, national, European & world level.