[David_Hayward (RIP)]

The top shot reminds me of the entrance to Southampton Water, with Calshot in the background, to the right off shot...that was RAF Hythe, a Sunderland base. The middle one certainly looks like the sea just off Haslar Hospital, Gosport with HMS Dolphin, the Submarine base, just off to the right. This would be called Stokes Bay then, and there are beaches that extend out some way.