This article lists the world's busiest container ports, by total number of twenty-foot equivalent units (TEUs) transported through the port. The table lists volume in thousands of TEU per year. The vast majority of containers moved by large, ocean-faring container ships are 20-foot and 40-foot ISO-standard shipping containers, with 40-foot units mostly dominating high volume ports listed here. Therefore, the numbers given below should not be interpreted as the amount of containers handled.