Casquets lighthouses per ton of ship when vessels passed the rocks and in turn he paid Trinity House 50 pounds per year for the right to run the lighthouses. The lighthouses reverted to Trinity House in 1785. They were converted to oil lamps with metal reflectors which were first used on 25 November 1790; and upgraded again with apparatus to rotate a beam of light in 1818. This had a clockwork mechanism which was wound up every hour and a half and gave one flash every 15 seconds. The lighthouses were badly damaged and the lanterns smashed in a severe storm on
The Maidens lighthouses plans were approved in 1824 and Halpin designed the lighthouses and supervised their construction. Building was completed and the lights switched on by 5 January 1829. The towers were 800 yards apart: the West Tower, on the northern rock, rose 84 feet above sea level and could be seen 13 miles away; the East Tower, on the southern rock, reached 94 feet and was visible from a distance of 14 miles. The keepers of the lighthouses and their families originally lived on site for the whole year. In one case, this led to romance when, in the 1830s, the Assistant