🛠️ Invention or technique

IALA Maritime Buoyage System (A and B)

Sistema de balizamiento marítimo IALA (A y B)

Date
1976-1980 · confidence high
Place
Saint-Germain-en-Laye, Île-de-France, France
Credited to
International Association of Marine Aids to Navigation and Lighthouse Authorities (IALA)
Field
Movement

What it is

A single system of buoys and beacons, with lateral, cardinal, isolated-danger, safe-water and special marks. Region A puts red to port and Region B to starboard.

System A was agreed in 1976 and System B was added with the 1980 Tokyo agreement; today it applies almost worldwide.

What it led to

  • uniform reading of marks by any mariner
  • standardised charts and buoyage symbols
  • replacement of over thirty national systems

Links

Sources✓ verified 2026-11-06