2015 Political Law, Q2

(1) A bill was introduced in the House of Representatives in order to implement faithfully the provisions of the United Nations Convention on the Law of the Sea (UNCLOS) to which the Philippines is a signatory. Congressman Pat Rio Tek questioned the constitutionality of the bill on the ground that the provisions of UN CLOS are violative of the provisions of the Constitution defining the Philippine internal waters and territorial sea. Do you agree or not with the said objection? Explain. (3%)
(2) Describe the following maritime regimes under UNCLOS (4%)
(a) Territorial sea
(b) Contiguous zone
(c) Exclusive economic zone
(d) Continental shelf

Quick check

Under Magallona v. Ermita, what is the legal effect of enacting a baselines law implementing UNCLOS?

What is the maximum breadth of the Territorial Sea under UNCLOS measured from the baselines?

In the Contiguous Zone, extending up to 24 nautical miles from baselines, what powers does the coastal State exercise?

What rights does a coastal State exercise over the living and non-living resources in its Exclusive Economic Zone (EEZ)?

The Continental Shelf regime under UNCLOS grants sovereign rights to the coastal State over which of the following?

Learn more about these topics

1. UNCLOS and Sovereignty
In Magallona v. Ermita, the Supreme Court held that statutory enactment of UNCLOS baselines does not alter or diminish Philippine national territory. UNCLOS is a multilateral treaty that provides a mechanism for delimiting maritime zones, establishing state sovereignty and jurisdiction over specific sea spaces. The law demarcating maritime baselines merely serves as a statutory tool to signal to the international community the precise extent of the nation's maritime zones. Consequently, implementing UNCLOS through domestic legislation preserves territorial integrity while aligning national law with international law governing ocean spaces.

2. Territorial Sea Zone
UNCLOS establishes distinct maritime zones extending from a coastal state's baselines. The territorial sea extends up to 12 nautical miles, over which the coastal state exercises full sovereignty over the air space, water column, seabed, and subsoil, subject only to the right of innocent passage by foreign vessels. Beyond the territorial sea lies the contiguous zone, extending up to 24 nautical miles from the baselines. In the contiguous zone, the coastal state does not exercise full sovereignty but possesses limited jurisdiction to prevent and punish infringements of its customs, fiscal, immigration, or sanitary laws.

3. Continental Shelf EEZ
The Exclusive Economic Zone (EEZ) extends up to 200 nautical miles from baselines, granting the coastal state sovereign rights to explore, exploit, conserve, and manage living and non-living natural resources in the water column and seabed. It also includes jurisdiction over artificial islands and marine scientific research. Meanwhile, the continental shelf comprises the seabed and subsoil extending up to 200 nautical miles, or to the outer edge of the continental margin. The coastal state exercises exclusive sovereign rights over the continental shelf for exploring and exploiting its non-living resources and sedentary species.

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The questions reproduced here are the official texts of the Philippine Bar Examinations, published by the Supreme Court. They are reproduced for study purposes.The suggested answers are the author’s own.

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