A great new addition to the series, essential Chart Symbols & Abbreviations used on British Admiralty Metric Charts in a compact, user friendly format. Dangers - Rocks & Wrecks. Buoyage, Beacons, Cables & Pipelines, Bridges, Obstructions, Depths, Limits, Contours, Soundings, Tide Levels, Lights, Leading Lights, Sector Lights, Nature of Seabed, etc. This set will be invaluable to all who use charts and the waterproof encapsulation means it can safely be used on RIBS and other wet craft. Consisting of 4 double sided A5 cards of crisp and clear images, printed using light-fast ink and encapsulated with a heavy duty plastic for cockpit use and abuse. Grouped together in one corner so that any sheet may be removed for individual use if required.