At that time Busan's port was crucial to receive war materials and aid, such as fabrics and processed foods to keep the economy stable.

Easy access to the Port of Busan between Japan, Singapore, and Hong Kong contribute to its vast growth.

Top exports of South Korea are integrated circuits, cars, refined petroleum, passenger and cargo ships, and vehicle parts.

[7] In 2017 Busan processed more than 20 million TEU, twenty-foot equivalents (a measure used to estimate the capacity of container ships).

[8] The port is part of the Maritime Silk Road that runs from the Chinese coast towards the southern tip of India to Mombasa, from there through the Suez Canal to the Mediterranean and there to the Upper Adriatic region of Trieste with its rail connections to Central and Eastern Europe.

[9][10][11][12] The current traffic volumes and urban population categorize Busan as a Large-Port Metropolis, using the Southampton system of port-city classification.