Excercising Maritime Boundary in Timor Sea

Robust Equidistance Line
Figure bellow depicts equidistance lines in Timor Sea that consist of two different segments. Segment CB4-a is the adjacent equidistance line between West Timor and Timor Leste, and is the elongation of land border in Mota Masin. Segment b-c represents the median line between Timor Leste and the Indonesia’s archipelagic straight baseline along Pulau Leti, Pulau Moa, Pulau Lakor, Pulau Maetimearang with zero effect given to Pulau Jako. On the other hand, segment b-d is similar to segment b-c only with full effect given to Pulau Jako.

Final Boundary Line
To finalize the boundary in Timor Sea, especially the one starting from the point between Pulau Jako and Pulau Leti going down to the boundary between Indonesia and Australia, half effect has been given to Pulau Jako. The blue line between two black lines is the final boundary line in Timor Sea at the East side. Meanwhile, the equidistance line departing from Mota Masin at the West side of Timor Sea has been left without any shift. This is because there is no significant feature to consider and neither relevant circumstance that influence the equidistance line. The following Figure shows the final boundaries in Timor Sea.

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Excercising Maritime Boundary in Ombai Strait

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.

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