“Whether marking a channel or flagging an underwater hazard, solar-powered LED (light emitting diode) lanterns are an increasingly popular upgrade for illuminated aids to navigation around the world. Thanks to the impressive durability, reliability and convenience of a solar LED solution, this technology is proving itself in a range of applications, from marking channels in Portugal’s Port of Viana do Castelo, to flagging an artificial reef off Madeira Island. Wherever light is needed, solar LED technology is translating into increased reliability and reduced operating costs for those who use and maintain aids to navigation…”
Full article: Port Technology International, “the leading technical preview and review of advanced technologies for ports, harbours and terminals world-wide” – Thirty-Seventh Edition, Spring 2008