SU4805 : Anti-aircraft gun emplacement, Hamble CommonDoubtful if the right hand block housed a searchlight, much more likely to have been for an automated anti-aircraft fire-control system such as the Kerrison Predictor. (an electromechanical analogue computer). Typically two separate platforms, one for the gun, the other for the Predictor, with a separation between the platforms to minimise vibrations from the gun affecting the predicting equipment.