MP4 was one of 11 planned towers on Guernsey, and the most unique of the 5 completed (except for perhaps MP5 at Vale Mill). It is located at Pleinmont, near Batterie Generaloberst Dollmann. The roof would have mounted a Freya radar in an open position, and could be accessed by a ladder from the top floor.
MP4 was one of the eleven planned naval towers for Guernsey. It was constructed on the southern part of Pleinmont, within the vicinity of Batterie Generaloberst Dollmann. The top three floors served the naval batteries, while the lower two served army batteries. Mounted on the roof was either a GeMa Seekakt or Freya radar set.
Access is possible into the tower, but it is derelict and care should be exercised when visiting, because of dangerous stairs, debris and sheer drops.