Robust Equidistance Line
Equidistance lines in Ombai Strait shown in figure bellow consist of four segments. The first segment is the line starting from common basepoint CB1 to point a, which represents the equidistance line between Oecussi and West Timor as the elongation of land border in Noel Besi. The second segment is the a-b segment, representing median line between Pulau Batek and Oecussi with full effect given to Pulau Batek. Segment b-c is the median line between Oecussi and Indonesia’s Pulau Pantar and Pulau Alor. Similar to the first segment, the last segment of c-CB2 is the equidistance line between Oecussi and West Timor, as the elongating of land border in Noel Meto.
Final Boundary Line
The maritime boundary in Ombai Strait, as depicted in figure bellow, has been obtained by changing the effect given to Pulau Batek. The significance of Pulau Batek is lower than that of Oecussi; therefore the weight given to Pulau Batek is lower than Oecussi. In this case, half effect (0.5) is given to Pulau Batek that causes the median line shifts toward it. Consequently, Oecussi possesses larger maritime zone than before.