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Buoyage: IALA Buoyage System

IALA buoyage regions and types of buoy

IALA Buoyage System
IALA Regions
IALA A and B
Port Hand Mark
Starboard Hand Mark
Pref. Channel Port
Pref. Channel Starboard
North Cardinal
South Cardinal
East Cardinal
West Cardinal
Isolated Danger Mark
Safe Water Mark
Temporary Wreck Buoy
Special Mark

IALA Bouyage Regions

Below is a chart showing a typical buoyed entrance to a marina.
If we want to make any sense of it we need to learn about the buoys
and how to recognise them, at sea by day, at sea by night and on the chart.