The fort, which is like an oval concrete island standing high out of the water, is much later. It is a Palmerston fort, built when Britain feared the ambitions of Louis Napoleon (Napoleon III).

It was rebuilt in 1861 to defend the approach to Hull and was one of 10 Palmerston Forts, erected in the north east. Then ...

It is one of many such forts, referred to as Palmerston Forts. Over the years many of these forts have been demolished or radically altered but Coalhouse, although modified to take more modern ...