Is it Mar d radar visible at the back of fcr of istanbul frigate positioned to the right of the picture? If so it seems gökdeniz was also started to be integrated on f515.
I wonder if Hisar class can endure sea conditions like a frigate.
For instance, according to open sources range of Hisar class is greater than that of Barbaros and Yavuz classes. Then, can we say Hisar class replace Yavuz class?