Piraeus in the lavish northern suburbs of Athens, many shipowners have opted once again to move their bases away from Piraeus to Northern Athens. Piraeus, nevertheless, is still a major centre for Greek and international shipping, and bi-annually acts as the focus for a major shipping convention, known as Posidonia, which attracts maritime industry professionals from all over the world. Piraeus today is one of the largest ports in Europe, and the annual number of 19 million passengers makes it the third largest worldwide in terms of passenger transportation. Piraeus is currently Greece's third-busiest port in terms of tons of goods
Piraeus-Perama light railway at Methonis street, allowing freight trains to access Keratsini Port. At Keratsini a short branch was constructed leading to one of the jetties. Due to serious damages on infrastructure and rolling stock caused by Allied bombing of Piraeus on 11 January 1944 the line paused service until April 1945. Most of its time the line was exploited with two kind of regular services: one full length service from Piraeus to the Naval Base, running every 15 minutes with two car formation of the rolling stock (line number 4) and in between, 7,5 minutes after, a short service from Piraeus to