In the same year, undersea electrical cables were put in place to connect the peninsula and the islands of Elba (1966), Ischia (1967), and Sardinia through Corsica (1967).
V rovnakom roku boli položené podmorské káble, ktoré spojili polostrov s ostrovmi Elba (1966), Ischia (1967) a Sardínia cez Korziku (1967).