Navilight with RAILBLAZA Mounting Attachment Tricolor. The Navilight Tricolor RB 2NM US Coast Guard approved for 2 nautical miles includes a green light to be shown at the starboard side and a red light to be shown at the port side. In addition, it includes the white Sternlight, to be used at the stern. It is battery operated, uses super bright LED light, is water proof, floats and is fully compatible with the RAILBLAZA StarPort Mounting system. RAILBLAZA is a New Zealand based supplier of one of the most versatile and EASY-To-USE Mounting systems for boats, ATVs, RVs or trailer. The base of the Navi light has the form of a star and will fit directly in many Anchor Winches and Winches as well as to specially designed mountings such as the Navisafe RAILBLAZA Sideport, the Navisafe RAILBLAZA Starport and the Navisafe RAILBLAZA RailMount. The green as well as the red lights show an unbroken light over an arc of the horizon of 112,5 Degrees. The white Sternlight shows an unbroken ligh The Navilight Tricolor RB 2NM US Coast Guard approved for 2 nautical miles includes a green light Examples of Usage . *Based on the Convention on the International Regulations for Preventing Collisi On a power-driven vessel of 12M or more in length but less than 50M in length . As green or red side As sternlight. On a power-driven vessels of less than 12M in length As green or red sidelight As combined green / red As sternlight