ISAS Insights

The most important sea-lane of communication (SLOC) in the Southeast Asian region is the Straits of Malacca, the main passage between the Indian Ocean and the South China Sea. It is 600 miles long and 300 miles wide on its western side. The length of the Singapore Straits, which connects Malacca with the South China Sea, is 75 miles, with an overall width of less than 12 miles. The Malacca and Singapore Straits provides the artery through which a significant proportion of global trade is conducted. Some 50,000 ship movements carrying as much as one quarter of the world's commerce and half the world's oil pass through these Straits each year.