The Port of Penang was relocated from George Town to Butterworth in 1974, in order to expand its container and cargo services.
To date, the Port of Penang operates six cargo and container terminals around Butterworth.
This has led to the manufacturing boom in Seberang Perai, as the Port of Penang has facilitated the ease of export from the factories in Perai.

The Port of Penang handled more than 1.44 million TEUs of cargo in 2016, making it the third busiest seaport in Malaysia.
The Port's strategic location allowed it to service not just northern Malaysia, but also southern Thailand.
The Port of Penang was relocated from George Town to Butterworth in 1974, in order to expand its container and cargo services. To date, the Port of Penang operates six cargo and container terminals around Butterworth. This has led to the manufacturing boom in Seberang Perai, as the Port of Penang has facilitated the ease of export from the factories in Perai.
The Port of Penang handled more than 1.44 million TEUs of cargo in 2016, making it the third busiest seaport in Malaysia. The Port's strategic location allowed it to service not just northern Malaysia, but also southern Thailand.
Seberang Perai