Piracy in the Strait of Malacca has long been a threat to ship owners and the mariners who ply the 900 km-long (550 miles) sea lane. In recent years, coordinated patrols by Indonesia, Malaysia, Thailand, and Singapore along with increased security on vessels have sparked a sharp downturn in piracy.
The Strait of Malacca's geography makes the region very susceptible to piracy. It was and still is an important passageway between China and India, used heavily for commercial trade. The strait is on the route between Europe, the Suez Canal, the oil-exporting countries of the Persian Gulf, and the busy ports of East Asia. It is narrow, contains thousands of islets, and is an outlet for many rivers, making it ideal for pirates to evade capture.