Marine signal flag: Letter "U" (Uniform) S1 - Southern Coasts of South America Netarts Bay is a standard

Netarts Bay is a standard navigation chart used by commercial and recreational mariners alike

NOAA Nautical Chart 18441: Puget Sound-northern part is a standard navigation chart used by commercial and recreational mariners alike

Installation

This comprehensive guide outlines the IALA Maritime Buoyage System

Marine signal flag: Letter "U" (Uniform) S1 - Southern Coasts of South America Netarts Bay is a standardInternational maritime signal message: "You are standing into danger" Marine signal flags are international signals used by ships at sea to spell out short messages, or more commonly, used individually or in combination they have special meanings.