It is a French Navy base, with Yandex Maps there is no censored area. You can see submarines there. https://yandex.com/maps/109145/toulon/?l=sat&ll=5.912788%2C43.124239&mode=whatshere&pt=92.233333%2C11.55&whatshere%5Bpoint%5D=5.913450%2C43.122776&whatshere%5Bzoom%5D=18.95&z=16.13