IALA A Buoyage revision module 1 of 5
IALA
IALA A vs B Overview
What the buoyage system is, where Region A and Region B differ, and how to avoid mixing the lateral colours.
IALA systemRegion A
7 guided lessons · 8 practice questions · 8 flashcards
3 outcomes · self-guided revision
- Separate the main buoyage families and decide what evidence is still needed before a mark becomes a safe pilotage instruction.
- State exactly which parts of the lateral system change between IALA Regions A and B and which recognition rules remain common.
- Translate a lateral mark correctly after identifying whether the passage is in Region A or Region B.
A self-guided revision companion that explains essential concepts, then helps you practise and test them. It supports—but does not replace—recognised instruction, practical training, assessment or certification. Access is a one-time payment, not a subscription.
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Question 1 of 5
Choose an answer to start
A yellow buoy is sighted close to the planned track. Which response applies the buoyage system correctly?
Press A–D or 1–4 to answer