|Max. length||114 km (71 mi)|
|Min. width||16 km (9.9 mi)|
|Average depth||22 m (72 ft) (minimum, within the nautical channel)|
The Singapore Strait is a 113 km-long (70 mi), 19 km-wide (12 mi) strait between the Strait of Malacca in the west and the South China Sea in the east. Singapore is on the north of the channel, and the Indonesian Riau Islands are on the south. The two have a maritime border along the strait.
It includes Keppel Harbour and many small islands. The strait provides the deepwater passage to the Port of Singapore, which makes it very busy. Approximately 2,000 merchant ships traverse the waters on a daily basis. The depth of the Singapore Strait limits the maximum draft of vessels going through the Straits of Malacca, and the Malaccamax ship class.
Around 2,000 merchant ships travel in the area every day, Tan estimated.