The Navilight TriColor Light with Navimount Base is USCG approved for 2 nautical miles and is fully compatible with the Navimount system!Battery-operated with a super-bright LED light, the Navilight TriColor is waterproof and buoyant. It features a green starboard light and a red port light as well as a white stern light. Each light works independently, but you can also use all three or just red and green simultaneously. Navimount Base Lights will work with Railblaza mounting systems when used with the Railblaza 932 converter. Operates with 3 AAA batteries (not included).Features:Green starboard light shows unbroken arc of 112.5Red port light shows unbroken arc of 112.5White stern light shows unbroken arc of 135Submersible to 66'Compatible with Navisafe Navimount System