Derbyhaven (Manx: Camys y Ree) ("King's Harbour" or "King's Cove") is a hamlet near Castletown in the southern parish of Malew, Isle of Man. It is located on the isthmus connecting Langness Peninsula to the rest of the island, on the bay of the same name, and also on Castletown Bay on the other side of the isthmus.

Derbyhaven Manx: Camys y Ree
View of Derbyhaven Hotel, now apartments
Derbyhaven Location within the Isle of Man
Population	(2006 Census)
OS grid reference	SC282679
Parish	Malew
Sheading	Rushen
Crown dependency	Isle of Man
Post town	ISLE OF MAN
Postcode district	IM9
Dialling code	01624
Police	Isle of Man
Fire	Isle of Man
Ambulance	Isle of Man
List of places Isle of Man 54.0784°N 4.6265°W / 54.0784; -4.6265

In the 17th century it was a significant port. The then Lord of Mann, James, 7th Earl of Derby, had the fort on nearby St Michael's Isle (Fort Island) rebuilt in 1645 (Henry VIII built the original fort in 1540) to protect Derbyhaven from the parliamentarians in the English Civil War. Later, in the 18th century, the fort served as a lighthouse.

Derbyhaven has a plaque commemorating the Battle of Ronaldsway, in which a Manx revolt led by Guðrøðr Magnússon was utterly crushed by Scottish forces in 1275.

External links

• Photographs by Jon Wornham
• The Lords of Man in the Middle Ages
• Where the Battle of Ronaldsway is given as 1270.
• Manx National Heritage - Eiraght Ashoonagh Vannin
• The Friends of Manx National Heritage