Zulu Code Z Marine Signal 4×4 Ft Flag – Printed 200D Nylon – Canvas Header – Brass Grommets – Colorfast & Stitched Edges – Nautical Boat Flag – Naval Code Signal Flag.

Under the Racing Rules of Sailing (RRS - Rule Z), hoisting the Zulu flag as a preparatory signal on the race committee boat indicates that the **"20% Scoring Penalty Rule"** is in effect at the starting line. Any racing yacht that enters the triangle formed by the ends of the starting line and the first mark during the minute before her starting signal receives a 20% scoring penalty calculated from her finishing position. The oversized 4x4 ft square profile ensures race participants can spot this penalty warning from across the starting box!

While recreational boats under 30 feet utilize compact 2x2 ft or 3x3 ft signal flags, this **oversized 4x4 ft (48x48 inch) square profile is engineered specifically for large commercial ships, naval vessels, harbor pilot stations, and sailing regatta committee boats**. On tall commercial ship mastheads or expansive harbor flagpoles, smaller flags become visually lost against the sky. A 4x4 ft square flag delivers commanding visual authority that can be read clearly by binoculars from distant vessels without distortion.

This flag features two standard #2 solid brass grommets anchored into a reinforced white duck canvas header. It is designed to attach securely to standard **commercial vessel halyards, harbor signal yardarms, regatta committee masts, or tall architectural flagpoles** using standard brass snap hooks, carabiners, ash toggles, or rigging shackles.

200 denier nylon is the premier commercial fabric for nautical ensigns and signal flags because it offers exceptional tensile strength while remaining lightweight. Thin printed polyester novelty flags absorb water and deteriorate rapidly when exposed to saltwater spray, sea air, and high-speed wind loads on commercial rigging halyards. Our 200D marine nylon sheds water instantly, resists saltwater and UV sun degradation, and flies gracefully even in light maritime breezes.

Yes, our flag features two solid #2 brass grommets that are inherently anti-rust and corrosion-resistant, making them ideal for harbor, coastal, and offshore commercial shipping environments. They are securely set into a heavyweight white duck canvas header to ensure they will not discolor your halyard rigging or pull out under heavy ship wind loads.