The distance from which an illuminated object can be seen is about twice as great as for nonilluminated objects, even during the day. Lighting particularly improves visibility in gloomy weather. Light is still an important signal provider at sea. Lighthouses send out their light signals and fire ships, in addition to radar and sonar, also send out light signals with their beacon fires. In coastal areas, light buoys are irreplaceable as shipping signals. One important step with increasing sea traffic was the introduction of ship position lamps. They are prescribed and precisely defined according to the “International Rules of 1972 for the prevention of collisions at sea” (KVR).

Applications:

• Lighthouse
• Navigation
• Buoy
• Coastal Signal