The first picture (not a postcard of mine) shows the early arrangement for launching and recovering seaplanes at Lee. There were rails on the cliff top on which the seaplanes were moved on a trolley. There were similar rails and trolley at beach level and a crane on the cliff top to lift the seaplanes up and down. The beginnings of the slipway can bee seen to the far left.
The second picture (again not one of my postcards) was taken later and shows nothing on the cliff top and so by then the slipway was in full use. Note that there is no sign yet of the airfield itself.