Indonesia pilot. west coast of Jawa, the north coast of Jawa eastwards to Tanjung Bendoh, the south and east coasts of Sumatera, Selat Sunda, Selat Bangka, Selat Gelasa, Selat Karimata, the south and west coasts of Kalimantan from Tanjung Puting to Pulau Pontianak, Pulau-pulau Badas and Tambelan, Pulau-pulau Lingaa and Riau, with the various routes leading to Singapore and South China Sea.