Indonesia–Malaysia border crossings. Illegal immigrants are also known to use such crossings. There are numerous scheduled sea crossings between Indonesia and Malaysia, mostly between ports in the former's island of Sumatra and Peninsula Malaysia. Here is a list of ports (Indonesian port followed by the Malaysian port) where scheduled boat services operate as of April 2008: Sumatra-Peninsula Malaysia North Kalimantan-Sabah Indonesia–Malaysia border The border between the Southeast Asian countries of Indonesia and Malaysia consist of both a land border separating the two countries' territories on the island of Borneo as well as maritime boundaries along the length of the Straits of Malacca,
Brunei–Malaysia border of Boundaries) Order in Council 1958. In 1979, Malaysia published a territorial waters and continental shelf map showing the area claimed by Brunei as its continental shelf/EEZ as belonging to Malaysia. The map also depicts the Brunei-Malaysian border as only running up to the 100 fathom isobath. Brunei does not recognise the assertions made by Malaysia. In 2000, Brunei had earlier awarded a concession for a petroleum block called Block J to Shell, Mitsubishi and ConocoPhillips and Block K to France's Total, BHP Billiton and Hess Corp. Subsequently, in 2003, Malaysia's national petroleum company Petronas awarded concessions to its subsidiary