Flat Holm Lighthouse

Flat Holm Lighthouse - Credit: Wikimedia Commons

Flat Holm Lighthouse is high and above mean high water. It has a 100 watt lamp that flashes three times every ten seconds, and is red from 106° to 140°; white to 151°; red to 203°; white to 106°. White light visibility up to , this data as recorded in 1965 in Reed's Nautical Almanac but Trinity House now note visibility as for the white light and for the red light. Read more on Wikipedia

type: lighthouse
date from: 1737

Source: en.wikipedia.org