Cyclic 12 navigation lights are designed for powerboats and sailboats up to 12m in length. Their sleek “hull” style leaves no sharp edges to cause injury or grabbing lines. Material: They are made from tough UV resistant nylon plastic, non-magnetic stainless steel electrical contacts and a nitrile water resistant seal to provide a long and reliable life. Housing: Available in black and white housing. Installation: Vertical mount. Visible distance: Port – Starboard – Bi-color: 1nm / Aft – Masthead: 2nm Bulb (included): 12V / 10W