''On the North.'' By the Southern limit of the South China Sea (Point () thence to Tanjong Nanka, the Southwest extremity of Banka Island, through this island to Tanjong Berikat the Eastern point (), on to Tanjong Djemang () in Billiton, along the North coast of this island to Tanjong Boeroeng Mandi () and thence a line to Tanjong Sambar () the Southwest extreme of Borneo ), the South coast of Borneo and the Southern limit of Makassar Strait (a line from the Southwestern extreme of Celebes (), through the Southern point of Tana Keke, to the Southern extreme of Laoet () thence up the West coast of that island to Tanjong Kiwi and thence across to Tanjong Petang, Borneo () at the Southern end of Laoet Strait ).
''On the East.'' By the Western limit of Flores Sea (line from Tg Sarokaja () to the Western Paternoster island () thence to the Northeastern Postiljon Island () and to the West point of Laikang Bay, Celebes ).
''On the South.'' By the Northern and Northwestern limits of Bali Sea (line from the Western Paternoster Island to the East point of Sepandjang and thence through this island to the West point of Gedeh Bay on the South coast of Kangean (). A line from the West point of Gedeh Bay, Kangean Island, to Tg Sedano, the Northeast extreme of Java and down the East coast to Tg Bantenan, the Southeast extreme of the island ), the North and West coasts of Java to Java Hoofd () its Western point, and thence a line to Vlakke Hoek () the Southern extreme of Sumatra.
''On the West.'' The East coast of Sumatra between Vlakke Hoek and Lucipara Point ().