Skip to main content
IALA
COLREG
COLREG
IALA
Lights
Sounds
GMDSS
Language
EN
ES
CA
DE
FR
IT
PT
NL
EL
HR
PT-BR
Quick sprint
Sign in
1/31
0✓
Under Rule 33 — Equipment for Sound Signals, what should a navigator remember?
A
Bell and gong may be replaced by equivalent equipment, but manual sounding must always remain possible.
B
Sailing vessels show sidelights and sternlight only (no masthead light).
C
Fishing vessels show green over white when trawling, red over white for other fishing, and sidelights plus sternlight when making way.
D
A vessel of 50 metres or more also exhibits a masthead light abaft of and higher than the green light.