Sanda lighthouse, nicknamed "the Ship" | |
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| Location | Sanda Island, Argyll and Bute, United Kingdom |
|---|---|
| OS grid | NR7254903715 |
| Coordinates | 55°16′30″N 5°34′58″W / 55.275°N 5.5828°W |
| Tower | |
| Constructed | 1850 |
| Built by | Alan Stevenson |
| Construction | masonry tower |
| Automated | 1991 |
| Height | 15 m (49 ft) |
| Shape | cylindrical tower with balcony and lantern attached to 1-storey keeper’s house |
| Markings | white tower |
| Power source | mains electricity |
| Operator | Northern Lighthouse Board |
| Heritage | category A listed building |
| Light | |
| Focal height | 50 m (160 ft) |
| Range | 15 nmi (28 km; 17 mi) |
| Characteristic | Fl W 10s |
The Sanda Island Lighthouse is a lighthouse on Sanda Island, Argyll and Bute, United Kingdom.
One of the thirteen major lighthouses designed and built by Alan Stevenson, the lighthouse was established in 1850, after a series of shipwrecks in the area. The three "steps" of the lighthouse were due to the cliff on which it was built, and remain a unique design in Scotland.
Automated in 1991, the lighthouse is operated by the Northern Lighthouse Board, and designated a Category A listed building.

On 2 December 1825, the ship Christiana, while on a voyage from Greenock, Renfrewshire, to Trinidad, was wrecked on Patterson's Rock, off Sanda Island. Earlier wrecks included Hannah in December 1770, and Henrietta in October 1816.
The wrecks created a demand for a lighthouse to be constructed on the island, as the island was the turning-point into the Firth of Clyde, next to the North Channel.
Initially, Trinity House proposed moving the Mull of Kintyre Lighthouse to the island, as the Mull lighthouse was frequently hidden due to fog. However, the commissioners of the Northern Lighthouse Board rejected this plan. As more wrecks occurred, the commissioners then decided to build on the summit of the Ship Rock, a detached lump of the island. The lighthouse was a stone masonry tower in three "steps" against the face of Ship Rock, and was designed and built by Alan Stevenson. This design remains unique in Scotland.
On 1 January 1850, the lighthouse was lit with a fixed red light from sunset till sunrise. The lighthouse was relieved by boat. In September 1876, a fog signal was installed at about 150 feet (46 m) above sea level. In November 1882, the character of the lighthouse was changed to intermittent white light, with a period of light for 8s, and darkness for 16s. The light had 61,000 candlepower. In March 1900, Daniel Dempsey, the lighthouse's boatman, and his two sons, were awarded a silver medal by the National Lifeboat Association, for saving the crew of Sovereign.
In 1991, the lighthouse was converted to an automated light. This light remains operational to date.