The Port Authority of Sifnos was informed by the 'Dionysios Solomos' operatiing on the scheduled service from Piraeus on the route Kythnos - Serifos - Sifnos - Milos - Serifos - Kythnos - Piraeus that the ferry, while berthed in Milos, suffered a malfunction of the cooling system of a generator on July 24, 2018