🔍 Key Concepts

• Difference between IALA-A and IALA-B buoyage regions • Global division between red-right-returning and green-right-returning systems • Which parts of the world (by oceans/continents) generally use IALA-B

💭 Think About

• Look at where each of the listed countries is located and which ocean/sea they border. • Recall which major maritime nations first used the IALA-B system and which neighboring coasts typically follow the same system. • Group the choices by hemisphere/region and think about which regions are known for using red buoys on the starboard side when entering from seaward.

✅ Before You Answer

• Verify which side (port or starboard) carries red marks when entering a harbor in IALA-B. • Confirm that IALA-B is used mainly in specific regions (such as the Americas and a few others) rather than worldwide. • Check which of the answer choices lies in or near a region traditionally associated with IALA-B buoyage.