Boundaries in the Island of Timor (The Netherlands v. Portugal)

This case concerned the delimitation of the boundary of the island of Timor from the river Noèl Bilomi as far as the source of the river Noèl Meto. The Parties differed as to the effect and application of treaties which they had previously concluded to establish the boundaries in 1904 and earlier, and requested that the sole arbitrator decide on the basis of the treaties and the general principles of international law. The sole arbitrator found the Dutch government's position to be in agreement with the original intentions of the Parties to the treaties and fixed the boundary line accordingly.

Case information

Name(s) of Claimant(s)
Name(s) of Respondent(s) -
Names of Parties -
Case number 1913-01
Administering institution Permanent Court of Arbitration (PCA)
Case status Concluded
Type of case Inter-state arbitration
Subject matter or economic sector Border delimitation
Procedural rules - Other -
Treaty or contract under which proceedings were commenced


Language of Proceeding French
Seat of Arbitration (by Country) -
Arbitrator(s), Conciliator(s), Other Neutral(s)

C.E. Lardy

Representatives of the Claimant(s) -
Representatives of the Respondent(s) -
Representatives of the Parties
Number of Arbitrators in case 1
Date of commencement of proceeding 03 April 1913
Date of issue of final award 25 June 1914
Length of Proceedings 1-2 years
Additional notes -


Award or other decision