Meets CE and USCG requirements for 2NM visibility for use on sail or powerboats under 66'. Meets NMMA Certification Procedure.. Clear globe. 12V DC - 6 CP lamp included. Base length 3-3/4", 1-5/8"W. Pre-drilled to accommodate #8 screws. Base is chrome plated zinc. Overall length: 23-1/8".