Lateral Marks

Define the edges of a navigable channel, most commonly when entering/leaving harbours

Test Summary

Difficulty:
392 Number of times this test has been taken.
74% The average score for this test.

IALA Buoyage System A

IALA Buoyage System A Lateral Marks are used in the majority of the world including Europe, Africa, Australia and most of Asia. The a lot of their characterics are generally opposite to Lateral Marks found in IALA B Systems but there are similar characterics between the two systems:

  • If numbered, Starboard Lateral Marks will always have odd numbers, while Port will always have even numbers
  • Top Marks for Starboard is always Conical or Pointed, while Port will always be a Square or Flat Top

Port Lateral Buoy

Colour
Red
Shapes
Conical, Cylindrical, Pillar, Spar
Top Marks
Square or Flat top
Numbering
Even Numbers
Lights
Red Multiple combinations
Chart Symbol
PORT Lateral Mark - IALA Buoyage System A - Chart Symbol

Starboard Lateral Buoy

Colour
Green
Shapes
Conical, Cylindrical, Pillar, Spar
Top Marks
Conical or Pointed Top
Numbering
Odd Numbers
Lights
Green Multiple combinations
Chart Symbol
STARBOARD Lateral Mark - IALA Buoyage System A - Chart Symbol

Tests

Taking a test can be a great way to build on what you have learnt already and build confidence before taking a formal qualification test. The Lateral Marks test consists of 5 questions randomly chosen from a selection.

392 Total Tests Taken
74% Average Score
Take Test

Terminology

Here's a list of the sailing terminiology used within this theory