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IALA
COLREG
COLREG
IALA
Lights
Sounds
GMDSS
Language
EN
ES
CA
DE
FR
IT
PT
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EL
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Lights & Shapes
Test by Images
Test by Images
Length
20
30
40
50
1/20
Which vessel is this?
A
Power-driven vessel < 50 m
B
Sail only → main option: 3 separate lights
C
Sail only < 20 m — single tricolour lantern at masthead, replaces the 3 separate lights
D
Vessel not under command, not making way