IALA buoyage
The IALA Maritime Buoyage System — laterals in both regions, preferred channels, cardinals, and the rest of the family. Original teaching content; system facts verified against IALA/NGA/Trinity House guidance.
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Card backs quote the Rules — public sector information reproduced under the Open Government Licence v3.0 (source: MSN 1781 — see the Rules reference).
Independent preparatory study aligned to the MCA OOW (Yachts <3000 GT) oral examination syllabus. Not an MCA-approved course and confers no credit toward a Certificate of Competency.