Other MarkIALA System
Emergency Wreck Marking Buoy
Identification guide and characteristics for safe navigation.
Used to provide a clear and unambiguous warning of a newly discovered wreck that has not yet been promulgated in nautical publications.
👁️ Visual Characteristics
Color Scheme
Blue and Yellow vertical stripes
Topmark
Upright Yellow Cross '+'
Buoy Shape
Pillar or Spar
💡 Night Identification (Light)
Color of Light
Blue and Yellow alternating
Light Rhythm
Al.Oc.BuY 3s
IALA Regions
The world is divided into two IALA regions (A and B). While Cardinal, Isolated Danger, Safe Water, and Special marks are the same globally, Lateral Marks have different color conventions depending on the region.
- Region A: Europe, Australia, New Zealand, Africa, Gulf and some Asian countries.
- Region B: Americas, Japan, South Korea, Philippines.