Cloch or Cloch Point ( gd, stone) is a point on the coast of the

Firth of Clyde The Firth of Clyde is the mouth of the River Clyde. It is located on the west coast of Scotland and constitutes the deepest coastal waters in the British Isles (it is 164 metres deep at its deepest). The firth is sheltered from the Atlantic ...

Scotland Scotland (, ) is a country that is part of the United Kingdom. Covering the northern third of the island of Great Britain, mainland Scotland has a border with England to the southeast and is otherwise surrounded by the Atlantic Ocean to the ...

. There has been a lighthouse since 1797 to warn ships off The Gantocks.

Location

Cloch Point lies on the A770, north of

Inverkip Inverkip (Scottish Gaelic: ''Inbhir Chip'') is a village and parish in the Inverclyde council area and historic county of Renfrewshire in the west central Lowlands of Scotland, southwest of Greenock and north of Largs on the A78 trunk road. Th ...

, three miles south-west of

Gourock Gourock ( ; gd, Guireag ) is a town in the Inverclyde council area and formerly a burgh of the County of Renfrew in the west of Scotland. It was a seaside resort on the East shore of the upper Firth of Clyde. Its main function today is as a r ...

, on the east shore of the

, directly opposite

Dunoon Dunoon (; gd, Dùn Omhain) is the main town on the Cowal peninsula in the south of Argyll and Bute, Scotland. It is located on the western shore of the upper Firth of Clyde, to the south of the Holy Loch and to the north of Innellan. As well ...

Lighthouse

The Cloch Lighthouse was designed by Thomas Smith and his son-in-law

Robert Stevenson Robert Stevenson may refer to: * Robert Stevenson (actor and politician) (1915–1975), American actor and politician * Robert Stevenson (civil engineer) (1772–1850), Scottish lighthouse engineer * Robert Stevenson (director) (1905–1986), Engl ...

. The building was completed in 1797. There appear to be two generations of keepers' houses, the older now used as stores and the more recent having

crow-stepped gable A stepped gable, crow-stepped gable, or corbie step is a stairstep type of design at the top of the triangular gable-end of a building. The top of the parapet wall projects above the roofline and the top of the brick or stone wall is stacked in a ...

s. The short circular-section tower has a

corbel In architecture, a corbel is a structural piece of stone, wood or metal jutting from a wall to carry a superincumbent weight, a type of bracket. A corbel is a solid piece of material in the wall, whereas a console is a piece applied to the s ...

led walkway and triangular windows. The foghorns were added between 1895 and 1897. Cloch lighthouse

The light was built by John Clarkson (engineer); Kermack and Gall built the tower, while Smith and Stevenson installed the oil lantern which was first lit on 11 August 1797. The light was replaced in 1829 with an

argand lamp The Argand lamp is a type of oil lamp invented in 1780 by Aimé Argand. Its output is 6 to 10 candelas, brighter than that of earlier lamps. Its more complete combustion of the candle wick and oil than in other lamps required much less frequent ...

and silvered reflector. About 1900, it was lit with

acetylene Acetylene (systematic name: ethyne) is the chemical compound with the formula and structure . It is a hydrocarbon and the simplest alkyne. This colorless gas is widely used as a fuel and a chemical building block. It is unstable in its pure ...

. A radio beacon was installed about 1931. The

dioptric Dioptrics is the branch of optics dealing with refraction, similarly the branch dealing with mirror A mirror or looking glass is an object that Reflection (physics), reflects an image. Light that bounces off a mirror will show an image of ...

and

catadioptric A catadioptric optical system is one where refraction and reflection are combined in an optical system, usually via lenses (dioptrics) and curved mirrors (catoptrics). Catadioptric combinations are used in focusing systems such as searchlights, he ...

lenses floated in baths of mercury and were rotated by a clockwork mechanism powered by falling weights. As well as tending the light, the keepers had to wind the mechanism by hand every two to three hours. Today, the light is fully automated and unmanned. The main light has been replaced by a light on a pole outside the lantern room.

Location

Lighthouse

See also

References

Further reading