What to know for Buoyage and Marks
Recognise common buoyage and understand which side is safe in simple pilotage situations.
IALA Region A lateral marks, cardinal marks, safe water marks, isolated danger, and special marks. This module is mapped to the published course boundary for Essential Navigation and Seamanship Revision and written as an independent revision aid, not official training material.
Key Points
- Region A uses red port and green starboard entering harbour
- Cardinal marks indicate the safest side by compass quadrant
- Safe water marks identify navigable water around the mark
- Special marks are yellow and mark special areas or features
Last reviewed: 6 July 2026 by Compass Revision curriculum review
Source notes
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