"Side lights" are a green light on the starboard side and a red light on the left side.
Each of these lights illuminates with continuous light an arc of the horizon at 112.5° and is installed so as to shine from the direction directly along the bow to 22.5 ° behind the beam of the corresponding side.
On a vessel with a length of less than 20 m, the side lights can be combined into one lamp, exposed in the diametrical plane of the vessel.
The right distinctive is green, the lighting sector is 112.5° (10 points), illuminates the horizon arc from the direction straight along the nose to two points to the right behind the traverse.
The left distinctive is red, the lighting sector is 112.5° (10 points). Illuminates the arc of the horizon from the direction straight along the bow to two points to the left behind the beam.