Regions • What is the difference between Regional A and Region B? Lateral buoys • What do Lateral buoys mark? • What colour are they? • What are the shapes they can be used? Cardinal buoys • What do Cardinal buoys mark? • How many are there? • What shapes distinguish them from each other? Safe Water buoys • What do Safe Water buoys mark? • What colour are they? Isolated Danger buoys • What do Isolated Danger buoys mark? • What colour are they? Other buoys • What other types of buoys might you see on a chart? • What colours are they?