DWS305/5NM is a multi-purpose vessel navigation light powered by solar energy and designed to comply with the COLREGS(1972) and UL 1104 standards. The light may become one of the following four lamps. Masthead Light Deck Light Barge Light Morse Signal Light 225° White Output 360° Down White 112.5° ;135° Morse Code The four functions of light can be combined and selected by an IRC.