* They are great for all types of boaters from weekend day sailors to offshore cruisers and professional mariners.
* Printed in full color on weatherproof high strength plastic, 8.5" x 11" three-hole cards are impervious to conditions at sea which quickly destroy laminated paper references.
* Quick Reference Navigation Rules International, the latest information covering the busy oceans and waterways of the world, is a comprehensive guide incorporating the International Maritime Buoyage System and COLREGS (Regulations for the Prevention of Collision at Sea). It clarifies the differences between Cardinal and Lateral Buoyage Systems, key to reducing confusion and danger when entering unfamiliar waters or busy ports. Complete details are included on right-of-way, sound signals, entering and clearing a foreign port, lights and day shapes, collision preventions procedures and signal flags.
