This indispensable set of cards simplifies a challenging subject, providing mariners a reference for both night-time navigation lights (displayed in colour) and daytime shapes. Visible from the position of the vessel, the silhouette is slightly discernible on cards featuring lights. The back of each card describes the meaning of the shapes and lights, a tool which has been a top-selling resource for over four decades. This package contains 50 cards, including an instruction card.
