🔍 Key Concepts
• IALA Maritime Buoyage System and the meaning of special marks
• Standard light colors used on buoys (red, green, white, yellow) and what each generally indicates
• How buoy shape and color pattern relate to buoy function or purpose
💭 Think About
• Think about what yellow lights usually indicate in the buoyage system: are they used for main channel navigation, or for something else like special areas or features?
• Consider whether the shape of the buoy (spherical, horizontally-banded, vertically-striped) determines the light color, or if the type/purpose of the mark is more important.
• Ask yourself: which option refers to a buoy whose primary role is to mark areas or features that are not part of the main channel or lateral system?
✅ Before You Answer
• Verify which type of buoy is defined as a special mark in the IALA system and what light color it uses.
• Confirm whether shapes or color patterns alone (horizontal bands, vertical stripes, spherical) are ever the determining factor for a yellow light, or if the function/type of buoy is key.
• Check that the option you choose corresponds to a mark that commonly indicates special areas or features (e.g., recreation areas, pipelines, military zones).