Transportation networks have a crucial role in today's economy, more precisely, maritime traffic is one of the most important drivers of global trade.90% of world trade is transported on water[1] and in 2012, the most heavily trafficked sea route saw ships travel predominantly from China to the West Coast of the United States.The ocean's traffic system also has its routes, gateways, some of which functioning as a major hub or interconnection.While container ships typically follow set schedules with fixed path for a regular service, dry carriers change their routes more often.Furthermore, container ships are much faster than the other categories - average days spent in the port is 1.9 in contrast to 5.6 of bulk dry carriers or 4.6 of oil tankers.
