This is apparently a plot of the Russian aircraft (in red) just cutting the very tip of Turkish airspace
Is this the sea at the left? Then it must be Sarma beach. And how accurate are google maps then:
https://www.google.ru/maps/@35.91250...!3m1!1e3?hl=en
There seems no "appendices" here...
UPD: Found it. It's less than 3 km in the widest part...
https://www.google.ru/maps/@35.82215...!3m1!1e3?hl=en