Safe Boat Operation

Navigation Aids

Lateral Channel Markers - Red Right Returning

Day Markers / Dayboards

Safe Water Marker

Isolated Danger Marker

Regulatory Markers - Danger, Restricted, Information

Intracoastal Waterway (ICW) Markers

Preferred Channel (Junction) Markers

Navigation aids (ATON) mark safe water, channels, and hazards. Understanding them is essential for safe navigation.

The lateral system uses red and green markers. When returning from sea, keep red markers on your right - 'Red Right Returning.'

6 more sections, 1 more key terms, plus chapter quizzes and the 25-question final exam — with unlimited retakes.

Key Terms Preview

Red Right Returning

Keep red markers on right when returning from sea

Nun Buoy

Red, cone-shaped marker

+ 1 more key terms in the full lesson