These 3D printed models buoys are the perfect tool to develop your knowledge and skill of navigating through buoyage systems. Instead of using pieces of card, utilise these 3D models to excel your learning and understanding of buoyage and prepare yourself for your exams. Included in this set are the four cardinal marks: North, South, East and West. They are coloured correctly and have the associated top marks. Each model has a base of approximately 40mm and are approximately 70mm tall.