Navigation light regulations for vessels of up to 50 metres.

 

Lantern

Colour

Mounting & angle of illumination

Vessel LOA.

Visibility

All round

white

White

 Mast top, arc of  360°.

Up to 50m

 

2 n miles.

Port

sidelight

Red

 

 From ahead to port, arc of 112.5° to 22.5° abaft the

 port beam.

Up to 12m

12 to 50m

1 n mile.

2 n miles.

Starboard

sidelight

Green

 

 From ahead to starboard, arc of 112.5° to 22.5° abaft

 the starboard beam.

Up to 12m

12 to 50m

1 n mile.

2 n miles.

Masthead

(steaming

light)

White

 Facing ahead on centre line at least; 1m above

 sidelights up to 12m LOA, 2.5m above gunwale 12 to

 20m LOA, 6m above hull 20 to 50m LOA, arc of

 225° to 22.5° abaft the beam on both sides.

Up to 12m

12 to 20m

20 to 50m

2 n miles.

3 n miles.

5 n miles.

Stern

White

 Facing astern, arc of 135° to 67.5° each side of

 vessel.

Up to 50m

2 n miles.

 

Tricolour

Red

green

 Mast top, red to green change pointing ahead, arcs of

Up to 20m

2 n miles.

 

& white

 112.5° red, 112.5° green & 135° white.

only.

 

 

On vessels of up to 20 metres LOA. separate port and starboard lanterns may be replaced by a single combined bicolour lantern mounted on the centre line of the vessel.

 

The tricolour lantern should not be confused with the masthead or steaming lantern. The tricolour lantern is strictly for vessels under sail and should never be shown in conjunction with other lanterns.

 

Navigation light combinations for auxiliary sailing vessels.

 

Lantern

 

 

AT

 ANCHOR

POWER 2

HIGH

POWER 1

LOW

SAIL 1

LOW

SAIL 2

TRICOLOUR

 

 

 

 

 

 

 

All round

white

 

On

On

Off

Off

Off

Port &

 

Off

On

On

On

Off

starboard

 

 

 

 

 

 

Masthead

 

 

Off

Off

On

 

Off

Off

Stern

 

 

Off

Off

On

On

Off

 Tri

 

colo

ur

 

 

Off

Off

Off

Off

On

 

 

The ‘POWER 2’ combination should not be used on vessels of over 12 metres LOA.

 

Vessels under sail not using a tricolour lantern may show an all round red lantern over an all round green lantern near the top of the mast in conjunction with port, starboard and stern lanterns.

 

For further information refer to ‘International Regulations for Preventing Collisions at Sea’ Part C and

Annex 1.  (RYA Publication G2).       

Compiled and supplied by  Mectronics Marine  < www.mectronics.co.uk >

Navlight switching specialists.