The Strait of Malacca or Straits of Malacca is a narrow,550 mi stretch of water between the Malay Peninsula and the Indonesian island of Sumatra. It is named after the Malacca sultanate that ruled over the archipelago between 1400 and 1511, the International Hydrographic Organization defines the limits of the Strait of Malacca as follows, On the West. A line joining Pedropunt, the Northernmost point of Sumatra and Lem Voalan the Southern extremity of Goh Puket in Siam, a line joining Tanjong Piai, the Southern extremity of the Malay Peninsula and The Brothers and thence to Klein Karimoen. The Southwestern coast of the Malay Peninsula, the Northeastern coast of Sumatra as far to the eastward as Tanjong Kedabu thence to Klein Karimoen. From an economic and strategic perspective, the Strait of Malacca is one of the most important shipping lanes in the world. The strait is the shipping channel between the Indian Ocean and the Pacific Ocean, linking major Asian economies such as India, China, Japan, Taiwan. Over 94,000 vessels pass through the strait each year, carrying about one-fourth of the traded goods, including oil, Chinese manufactured products. About a quarter of all oil carried by sea passes through the Strait, in 2007, an estimated 13.7 million barrels per day were transported through the strait, increasing to an estimated 15.2 million barrels per day in 2011. In addition, it is one of the worlds most congested shipping choke points because it narrows to only 2.8 km wide at the Phillips Channel. The maximum size of a vessel that can pass through the Strait is referred to as Malaccamax, for some of the worlds largest ships, the Straits minimum depth isnt deep enough. In addition, the next closest passageway is even more shallow and narrow than Malacca, therefore, these large ships must detour several thousand miles/kilometers and use the Lombok Strait, Makassar Strait, Sibutu Passage, or Mindoro Strait instead. Piracy has been a problem in the strait, piracy had been high in the 2000s, with additional increase after the events of September 11,2001. After attacks rose again in the first half of 2004, regional navies stepped up their patrols of the area in July 2004, subsequently, attacks on ships in the Strait of Malacca dropped, to 79 in 2005 and 50 in 2006. Recent reports indicate that attacks have dropped to levels in recent years. There are 34 shipwrecks, some dating to the 1880s, in the Traffic Separation Scheme and these pose a collision hazard in the narrow and shallow strait. Another risk is the annual haze due to raging bush fires in Sumatra and it may reduce visibility to 200 metres, forcing ships to slow down in the busy strait. The strait is used by Ships longer than 350 metres. Thailand has developed plans to diminish the economic significance of the strait
The Strait of Malacca connects the Pacific Ocean to the east with the Indian Ocean to the west.
Yearly haze from the smoke of raging bush fires, limiting visibility.