The Davis Instruments Quick Reference Navigation Rules Card is a durable, full-color reference tool designed to help boaters and captains quickly identify essential navigation guidelines. This handy card features clear organization for easy reading, making it a reliable resource for verifying buoyage systems, right-of-way, and signal protocols on the water. Comprehensive Content: Covers US Buoyage System, Inland and International Rules, right-of-way, lights, sound signals, bridge signals, zones of approach, and distress signals. Durable Design: Weatherproof construction made from durable plastic to withstand marine environments. Format: Full-color, double-sided printing with three-hole punching for easy mounting or binder storage. Dimensions: 8.5 in. x 11 in. Manufacturer Part Number: 125. UPC: 011698012503. Trusted for its clarity, this card is used by organizations including the US Coast Guard, US Coast Guard Auxiliary, and US Power Squadron.