Law on the Territorial Sea and the Contiguous Zone of the Republic of China Article 7

Foreign civil vessels may, under the reciprocity principle, enjoy the right of innocent passage through the territorial sea of the Republic of China as long as the passage is not prejudicial to the peace, good order and security of the Republic of China. Passage shall be continuous and expeditious and be in conformity with this law and other rules of international law.An innocent continuous and expeditious passage, in conformity with this law and other rules of international law as prescribed in the preceding paragraph may include stopping and anchoring under necessity, provided the same are incidental to ordinary navigation or are rendered necessary by force majeure or distress or for the purpose of rendering assistance to persons, vessels or aircraft in danger or distress.Foreign military or government vessels shall give prior notice to the authorities concerned before their passage through the territorial sea of the Republic of China.While passing through the territorial sea of the Republic of China, foreign submarines and other underwater vessels are required to navigate on the surface and to show their flags.Regulations governing innocent passage of foreign vessels shall be enacted by the Executive Yuan.Vessels of the Chinese mainland passing through the territorial sea of the Republic of China shall conform to the provisions of this law and that of the Statute Governing the Relations between the Taiwan Area and the Mainland Area.