Coordinates: 1°13′N 103°55′E / 1.217°N 103.917°E
The Singapore Strait (simplified Chinese: 新加坡海峡; traditional Chinese: 新加坡海峽; pinyin: Xīnjiāpō Hǎixiá; Malay: Selat Singapura) is a 105-kilometer long, 16-kilometer wide strait between the Strait of Malacca in the west and the Karimata Strait in the east. Singapore is on the north of the channel and the Riau Islands are on the south. The Indonesia-Singapore border lies along the length of the straits.
It includes Keppel Harbour and many small islands. The strait provides the deepwater passage to the Port of Singapore, which makes it very busy.
The depth of the Singapore Strait defines the maximum draft of vessels going through the Straits of Malacca, and the Malaccamax ship class.