🔍 Key Concepts

• Chart symbols and colors used on NOAA charts, especially what magenta usually represents • The difference between how natural dangers (rocks, breakers, shoals) and man-made or regulated areas (pipelines, fish traps, boundaries) are shown on charts • How special zones or areas along the shoreline are typically indicated on charts (for example, parallel lines or boundaries)

💭 Think About

• Think about what types of features are usually shown as broken magenta lines rather than solid black or blue symbols. • Consider whether submerged rocks or breakers would normally be shown by a line running along the coast or by more localized symbols at each danger point. • Ask yourself: which of these four choices describes something that would logically have a defined boundary area that could be drawn as a long, broken line roughly parallel to the shore?

✅ Before You Answer

• Review a NOAA chart symbol booklet (Chart No. 1) section for magenta dashed or broken lines and see what categories they usually indicate. • Check how pipelines and submerged rocks are normally depicted (color, symbol shape, and whether they follow the shore or follow a route). • Verify which of the options is most consistent with an area boundary rather than a single hazard point symbol.