The coast of Sumatera (Sumatra) from Batakarang Point trends NNW for about 65 miles to Tanjung Jabung.
The entire coast is very low, covered with wood, and fronted by a mud bank that, within a depth of 9.1m, in places, extends about 13 miles offshore.
It may be approached to a depth of 9.1m, except off Tanjung Jabung, where the 10m curve is barely 1 mile offshore, with less than 3.7m close to its edge.
Vessels bound for Selat Berhala, when approaching Tanjung Jabung should keep about 8 miles offshore until it bears 270°.
Tanjung Batakarang was reported to have extended nearly 1 mile E of its charted position.