According to the COLREG 72, all pole lights should be placed higher than the sidelights. Thus, it is easier for other boats to calculate their position in relation to your position and direction. Furthermore, a light positioned lower maybe obscured by other objects or people. The Lalizas range of pole lights includes telescopic, folding, plug in and fixed, thus meeting all requirements. This type of pole lights may be used on sailing boats less than 20m (tri colour) or on powerboats less than 12m (white), instead of small all round lights. Material: Made of marine grade stainless steel 316 tubing with ABS plastic, polycarbonate lens and nitrite O ring sealed light and a fibre nylon mix base. Housing: Available in black and white housing. Installation: Pole lights are positioned in such a way that they are higher than the sidelights and may be screwed into position. Depending on the model, you can adjust the height of the light. Five lengths of Lalizas pole lights are available which vary between 23cm and 130cm. Visible distance: 2nm Bulb (included): 12V / 10W.