From my dodgy memory;
Hunter used to 'attack' the Eastney end every other Thursday it seemed. Come in at about 150 - 200ft from south , and execute a climbing turn over Langstone Harbour / Hayling Island - repeat all morning.
Eastney had/has a fort (barracks?) right on the beach with a 4.5" gun and what looked like a twin-launcher for Sea Dart missiles. Don't know whether they were used purely for training or if they could actually be used in anger, but I assume the Hunter was testing them.