Vessel Requirements

Lamps requirements by vessel length.

For vessels less than 50 metres in length overall, IMO COLREG 72 describes the following 
minimum visible distances for navigation lamps. Distances are in Nautical Miles.
Supplementary national approvals may also apply.

Vessels 0-12 metres / 0-40 feet in length:

 

White, Red, Green All Round lamps, 2 miles
Masthead lamp, 2 miles
Port and Starboard lamps, 1 mile
Stern lamp, 2 miles
Tri Colour lamp, 2 miles. (Sailing vessels under sail only)

Vessels 12-20 metres / 40-65 feet in length:

 

White, Red, Green All Round lamps, 2 miles
Masthead lamp, 3 miles
Port and Starboard lamps, 2 miles
Stern lamp, 2 miles
Tri Colour lamp, 2 miles. (Sailing vessels under sail only) 

 Vessels 20-50 metres / 65-150 feet in length:

 

White, Red, Green All Round lamps, 2 miles
Masthead lamp, 5 miles
Port and Starboard lamps, 2 miles
Stern lamp, 2 miles

IMO COLREG 72 Lights and Visibility - Powerboats

IMO COLREG requirements for navigation lighting on powerboats less than 50m LOA (Length Overall).
Note - Sailboats under motor adopt the rules for Powerboats.

Powerboats up to 7m. Max 7 knots   Powerboats up to 12m where Masthead and Stern lamps cannot be mounted   Powerboats up to 12m where Masthead and Stern lamps cannot be mounted
PB1    PB2    PB3
 1 All Round White lamp   1 All Round White lamp
1 Port lamp
1 Starboard lamp
  1 All Round White lamp
1 Bi-Colour lamp
         
 Powerboats up to 20m    Powerboats up to 20m    Powerboats up to 50m
 PB4    PB5    PB6
1 Masthead lamp
1 Port lamp
1 Starboard lamp
1 Stern lamp
  1 Masthead lamp
1 Bi-Colour lamp
1 Stern lamp
  1 Masthead lamp
1 Port lamp
1 Starboard lamp
1 Stern lamp
         
    A vessel less than 50m engaged in
trawling
  A vessel less than 50m engaged in
fishing, other than trawling
    PB7    PB8 
    1 All Round Green lamp
1 All Round White lamp
mounted above one another
  1 All Round Red lamp
1 All Round White lamp
mounted above one another
         
Powerboats towing with a tow length of
less than 200m
  A vessel engaged in diving operations   A vessel engaged in pilotage duty
 PB9   PB10    PB11 
In addition to Port, Starboard and Stern lamps
1 Towing lamp mounted above the stern lamp
2 Masthead lamps in a vertical line
(When the tow length exceeds 200m, three Masthead lamps in a vertical line)
   1 All Round Red lamp
1 All Round White lamp
1 All Round Red lamp
mounted above one another
  In addition to Port, Starboard, Masthead and
Stern lamps
1 All Round White lamp
1 All Round Red lamp
mounted above one another 

 


 

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