[4][5] On the summit, at 45 metres (148 ft) above sea level, is a lighthouse built by David and Charles Alexander Stevenson in 1908.[6] The Dutch trawler Alexanders ran aground and sank on the south side of Eilean Trodday on 29 January 1974.Running on automatic pilot she hit the north east coast of the island near the lighthouse and sank in 28 metres (92 ft) of water.[9] The Banff registered trawler, Brothers BF138 was wrecked on Eilean Trodday on the morning of 1 June 2006 with the loss of two lives.[10] The island is an excellent dive site with items of interest being the wreck of the Nordhuk and the sheets of multi-coloured jewel anemones, although the tidal currents are strong outside of slack water.