Signalling Lanterns

Signalling Lanterns

Signalling lanterns, also known as signal lamps, are devices used to communicate messages over a distance using light. They were commonly used in the past as a means of communication between ships, as well as between ships and shore stations. The lanterns consist of a light source, usually a powerful lamp, and a lens system that focuses the light into a beam. The beam can be modulated by various means, such as shutters or colored filters, to convey different messages. The use of signalling lanterns dates back to the early days of maritime navigation, when ships needed a way to communicate with each other over long distances. The first signalling lanterns were simple oil lamps with colored glass lenses, which were used to indicate a ship's position or to signal for help. Over time, the technology behind signalling lanterns improved, with the introduction of more powerful lamps and more sophisticated lens systems. One of the most famous uses of signalling lanterns was during the sinking of the Titanic in 1912. The ship's crew used signalling lanterns to communicate with other ships in the area, in an attempt to summon help. Despite their efforts, the Titanic sank with the loss of over 1,500 lives. Today, signalling lanterns are still used in some applications, such as in the military or in emergency situations. However, they have largely been replaced by more modern forms of communication, such as radio and satellite technology.

communication, maritime, lamp, lens, Titanic

— Charles Jones

CITATION : "Charles Jones. 'Signalling Lanterns.' Design+Encyclopedia. https://design-encyclopedia.com/define/signalling-lanterns?E=396597 (Accessed on October 14, 2026)"