Livorse Navigational Lights are constructed of 316 marine grade stainless steel. Livorsi nav lights only consume 1/10th of an amp at 14 volts. These lights are to be used on any vessel up to 65 feet and have a visibility of two nautical miles. Designed to be flush mounted onto a vertical surface to allow the light pattern to be unobstructed from view. Port or starboard lights are available for 12 or 24 volt system. ABYC & USCG certified and NMMA accepted. Optional adapter plate available for White Industries & TH lights. Measures 3 1/4” W x 1 3/4” L X 7/8” D.