Philippines Republic Act No. 3046 (RA3446)

In 1961, the Philippines enacted Republic Act No. 3046 (RA3446), to define the baselines of the territorial sea of the Philippines.This Act was amended on September 18, 1968 by RA5446, and on March 10, 2009 by RA9522.
Presidential Proclamation No. 1596 had asserted Philippine sovereignty over the Spratly Islands on June 11, 1978. RA9522 reasserted that, and also asserted Philippine sovereignty over Scarborough Shoal.
On 8 April 2009, the Philippines lodged a partial territorial waters claim with the United Nations Commission on the Limits of the Continental Shelf (UNCLCS) in relation to the continental shelf in the region of Benham Rise.
On 28 April 2012, Ramon Paje, director of the Philippine Department of Environment and Natural Resources announced that the claim had been approved by the United Nations Convention on the Law of the Sea (UNCLOS).