Visibility requirements for navigation lights

Please refer to the table to see what the definition of the IMO COLLREGS 1972 is with regards to the relation ship between the requested visibility per type of navigation light and the length and type of boat or vessel where applied. 


Type of
navigation
light
AngleType of
boat Boats
Vessel
< 12 m / 39 ft
Vessel
< 20 m / 65 ft
Vessel
< 50 m / 164 ft
Vessel
> 50 m / 164 ft
Starboard 112,5° Sailing and
motor boats
1 nm 2 nm 2 nm 3 nm
Port 112,5° Sailing and
motor boats
1 nm 2 nm 2 nm 3 nm
Stern 135° Sailing and
motor boats
2 nm 2 nm 2 nm 3 nm
Masthead 225° Motor boats 2 nm 3 nm 5 nm 6 nm
All-round 360° Sailing and
motor boats
2 nm 2 nm 2 nm 3 nm
Bicolor 112,5°/
112,5°
Sailing and
motor boats
1 nm 2 nm

Tricolor112,5°/ 112,5°/ 135°Sailing boats1 - 2 nm2 nm


 

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