The cliff top coastguard training centre at Steamer Point is due to close and be replaced by housing.
The site was a radar station from 1948 to 1980 when the Signals Research and Development Establishment, or SRDE, was developing radar.
The fear now is that low rise buildings associated with the sea will be replaced by more instrusive structures.
The move is a result of Marine & Coastguard Agency cuts leading to the number of coastguards being reduced and properties sold.
