Perched here on St Michael’s Isle, what stories could Derby Fort tell if its stones could speak? This rocky island, guarding Derbyhaven Bay, has seen millennia of human activity. The most prominent feature here is Derby Fort.
St Michael’s Isle is first noted in historical records around 1250. It was the site of a battle and home to St Michael’s Chapel. This chapel, built on a Celtic keeill, is one of the best-preserved examples of early Manx Christianity. People were buried around it well into the 18th century.
But it’s the circular Derby Fort that truly captures our attention.
King Henry VIII ordered its construction in the 1540s. He wanted to protect against potential French or Spanish invasions. Derby Fort was one of many forts built along the British coast for this purpose.
In the 1640s, James Stanley, the 7th Earl of Derby, updated the fort during the English Civil War. The fort was then renamed Derby Fort. His initials and the year 1645 were carved above the entrance.
The fort’s defenses featured walls eight feet thick. A wall walk at the top supported eight cannons. Together with a second battery constructed near Ronaldsway in 1695, Derby Fort defended Derby Haven Bay.
Later, in the 1700s, the fort served as a lighthouse. A light on a turret guided the herring fleet at sea. Even in World War II, additional defenses were added to protect the nearby airfield.
After the Napoleonic Wars, the fort fell into disuse by the 1820s.
Today Derby Fort stands as a relic of the past. When you walk around St Michael’s Isle, you can still see the parapet on the northwest side. You can also trace the shallow ditch on the other three sides. Armed with old cannons found around the island, Derby Fort reminds us of the Isle of Man’s strategic importance throughout history. A visit here connects us to the battles, the ingenuity, and the ever-changing needs of those who once called this island home.