Carr is a Scots term for a coastal rock, found as an element in the names of reefs and small islands in south-east Scotland and north-east England.
It may have entered Old English from a Celtic source; compare carra or carraig in Gaelic, terms for a ledge or projecting rock.
[5] In 1817 the tower had been nearly complete when it was reduced to the fifth course of stones, so the design was changed to a pyramidal structure of cast iron columns with a ball on top.
[6] The lightship broke adrift from her moorings in a gale on 8 December 1959 and all eight crew members of the Broughty Ferry lifeboat died trying to rescue her.
[6][2] The lightship was saved from the scrapyard in 2010 and funds are being sought by the Taymara charity to restore her as an exhibition space on the Dundee waterfront.
When Stevenson was building the beacon, the stone blocks were cut and checked for fitting on the foreshore here prior to being shipped out to the reef.
These circular outlines can still be seen cut into the rock on the shore, as can the nearby remains of the quay where the finished blocks were loaded onto the workboat.