The Port of Penang is operated by the Penang Port Commission. There are four terminals, one on Penang island (Swettenham Pier) and three on the mainland, namely North Butterworth Container Terminal (NBCT), Butterworth Deep Water Wharves (BDWW), and Prai Bulk Cargo Terminal (PBCT). Malaysia being the 13th largest exporting nation, the Port of Penang plays a leading role in the nation's shipping industry, linking Penang to more than 200 ports worldwide. Swettenham Pier also accommodates cruise ships.
Port Kelang is a town and main gateway by sea into Malaysia. Formerly known as Port Swettenham, it is also the location of the largest and busiest port in the country. Port Kelang is located in the district of Klang in the state of Selangor. It is located about 6km (3.7 miles) southwest of Klang, and 38km (24 miles) southwest of Kuala Lumpur.
Port Kelang was the 13th busiest transshipment port (2004) and the 16th busiest container port (2007) in the world. It was also the 26th busiest port in terms of total cargo tonnage handled in 2005.