STANDARD EQUIPMENT - The costal navigation reference card is standard navigation equipment on US Coast Guard patrol boats, providing a reliable and trustworthy boating navigation quick reference card ENDURING CONDITIONS - This coastwise navigational tool for sailing is crafted with weatherproof high strength marine plastic, making a durable sailing navigation tool, for long lasting reference use CONVENEIENTLY SIZE - Our standard navigation equipment is a 8.5 x 11 sized waterproof card, packed full of comprehensive information in complete color, including classical costal navigation techniques BULKHEAD PUNCHED - This rules of the road quick reference card have been conveniently punched for a binder or bulkhead mounting, allowing you to easily store or reference your sailing navigation tools IDEAL FOR TRAINING - This sailing navigation card is ideal tool for training and works well alongside many boating navigation informational books, with usefully compact and organized design