The Penang Strait is an 11-kilometre-wide (6.8 mi) strait that separates Penang Island from mainland Malay Peninsula. Penang Island is to the west of the channel, while Seberang Perai, the mainland half of the State of Penang, is to the east. The northern and southern ends of the channel join the Strait of Malacca, one of the world's busiest maritime routes.
