Sunda Strait
Strait between Java and Sumatra, historically vital shipping route.
The Sunda Strait is the waterway between the Indonesian islands of Java and Sumatra, connecting the Java Sea with the Indian Ocean. It takes its name from the Sunda Kingdom, which ruled western Java from 669 to around 1579, and also alludes to the Sundanese people native to West Java and Banten. For centuries, the strait was an important shipping route, especially during the period when the Dutch East India Company used it as the gateway to the Spice Islands of Indonesia (1602–1799).
- location
- Between Java and Sumatra, Indonesia
- minimum_width
- 24 km (15 mi) at northeastern end
- minimum_depth
- 20 m (66 ft) at northeastern end
- orientation
- Southwest/northeast
- notable_islands
- Sangiang, Sebesi, Sebuku, Panaitan, Krakatoa Archipelago
- major_event
- 1883 eruption of Krakatau
- battle
- Battle of Sunda Strait, March 1, 1942
Lore & Background
The Sunda Strait extends in a roughly southwest/northeast orientation, with a minimum width of 24 km at its northeastern end between Cape Tua on Sumatra and Cape Pujat on Java. It is essentially triangular in shape, with two large bays on its northern side: Lampung Bay and Semangka Bay. The strait is very broad and deep at its southwestern end, but as it narrows to the northeast it becomes much shallower, with a minimum depth of only 20 m in parts. It is notoriously difficult to navigate due to shallowness, very strong tidal currents, sandbanks, and man-made obstructions such as oil platforms off the Java coast.
Reader's Guide
The Sunda Strait's significance stems from its historical role as a key maritime passage, particularly during the Dutch East India Company's era (1602–1799) when it served as the gateway to the Spice Islands. However, its narrowness, shallowness, and difficult navigation have made it unsuitable for many modern large ships, which instead use the Strait of Malacca. The strait is also notable for the 1883 eruption of Krakatau, which drastically altered the topography, deposited 18–21 km³ of ignimbrite over 1.1 million km², and caused tsunamis and pyroclastic flows that killed tens of thousands. The Battle of Sunda Strait on March 1, 1942, saw the Allied cruisers HMAS Perth and USS Houston sunk by a Japanese force. In the 1960s and 1990s, bridge proposals emerged, and a 2007 plan for a four-part suspension bridge was shelved in 2014. The strait lies within Indonesia’s Fisheries Management Area 572, the focus of the Blue Halo S pilot involving Konservasi Indonesia.
Did You Know?
- The strait takes its name from the Sunda Kingdom, which ruled western Java from 669 to around 1579.
- The 1883 eruption of Krakatau killed tens of thousands; out of 3,000 people on nearby Sebesi, not one survived.
- The strait has a minimum depth of only 20 m at its northeastern end.
- In 2014, President Joko Widodo's government shelved plans for a bridge across the strait.
Frequently Asked Questions
Who is Sunda Strait?
The Sunda Strait is the waterway sitting between Java and Sumatra in western Indonesia, linking the Java Sea to the Indian Ocean. It borrows its name from the Sunda Kingdom that ruled western Java from 669 to roughly 1579, as well as from the Sundanese people native to that area.
What are Sunda Strait's powers/role?
Its core function is acting as a navigable corridor between two major bodies of water, running on a southwest-to-northeast axis with a minimum width of about 24 km and a minimum depth near 20 m at the northeastern end. It also hosts a cluster of islands—Sangiang, Sebesi, Sebuku, Panaitan, and the Krakatoa Archipelago—that break up the passage.
How does Sunda Strait's story end?
The most dramatic set-piece in its timeline was the catastrophic 1883 eruption of Krakatau, which dramatically reshaped the archipelago sitting inside the strait. Beyond that single cataclysm, the strait remains an active waterway, so its narrative is really ongoing rather than concluded.
Why is Sunda Strait important?
For centuries it served as a critical maritime corridor, most famously as the Dutch East India Company's main gateway to the Spice Islands during its 1602-to-1799 operation. Its position wedged between two of Indonesia's largest islands makes it a natural chokepoint for regional shipping.
What islands are part of Sunda Strait's 'crew'?
The strait is scattered with several islands, including Sangiang, Sebesi, Sebuku, Panaitan, and the Krakatoa Archipelago. These landmasses have long served as navigational landmarks for vessels threading through the passage.
More in Straits, Channels, And Seas 1-24
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