Haulbowline Lighthouse, Carlingford Lough, Co Down

The Haulbowline Lighthouse is an active 19th century lighthouse, described as an "elegant, tapering stone tower". It is located at the entrance to Carlingford Lough, near Cranfield Point in County Down, Northern Ireland. The lighthouse was built on the eastern part of the Haulbowline rocks, one of a number of navigation hazards at the seaward end of Carlingford Lough. Construction of the 34-metre-high  stone tower has been described as "a remarkable achievement at the time", given the location "on a semi-submerged rock with fast currents running around it". Originally white in colour, the paint was removed in 1946 to reveal the stone beneath. The principal light is displayed 32m above sea level as a constant white light. A secondary light was also displayed on a balcony facing the sea, known as a half-tide light, this was lit when the state of the tide was such that there would be enough depth for ships to pass into the lough, and until 1922 a black ball was also raised on a mast above the tower during daylight hours, to indicate the same tidal conditions.

This is one of just over sixty coastal lighthouses and many more harbour and estuary lights I've illustrated. I'll be posting them up each day.
The A2 poster of 16 of the most iconic lighthouses is up and ready to ship. If you're interested in a particular lighthouse they're available in A4 or A3 size.