Sarawak (Definition of Boundaries) Order in Council 1958
The Brunei–Malaysia border divides the territories of Brunei and Malaysia on the island of Borneo. It consists of a 528.45 km (328.36 mi) land border and substantial lengths of maritime borders stretching from the coastline of the two countries to the edge of the continental shelf in the South China Sea. Brunei's 200 nautical mile continental shelf claim makes it a claimant of a portion of the South China Sea that is subject to multiple overlapping claims by China, Taiwan and Vietnam. Malaysia is also a claimant in the area but a bilateral agreement with Brunei has solved the overlapping claims over Brunei's territorial waters.