A 24V 25W navigation lamp with a standard E27 screw base rated at 26 candela, suited to vessel navigation lighting where a lower-power, standard-fit bulb is specified. Specs: 24V | 25W | E27 | 26cd Common uses: Marine vessel navigation lighting Base: E27 Wattage: 25W Voltage: 24V LIFE Avg. Lifespan: 1000H FROM- SPL-LIGHTING Frequently Asked Questions What is an E27 navigation lamp used for? An E27 navigation lamp is used in marine vessel navigation and signalling lighting systems. What voltage does this navigation lamp use? This lamp operates at 24 volts. What wattage is this E27 navigation bulb? This navigation lamp has a 25W power rating. What base type does this lamp use? This lamp uses an E27 screw base. What does 26CD mean? 26CD refers to the light intensity rating used to describe navigation lamp brightness.