Baselines of the Philippines

The baselines of the Philippines (Filipino: mga batayang-guhit ng Pilipinas) are the set of straight baselines encircling the Philippine archipelago from which the country's maritime entitlements are measured. The baselines were first established in 1961 through an act of Congress, and were later amended in April 2009 to conform with the United Nations Convention on the Law of the Sea (UNCLOS), to which the Philippines is a signatory.

Source: Wikipedia — Baselines of the Philippines (CC BY-SA 4.0)