The BRP Gregorio del Pilar (PF-8)[3] was an Andrés Bonifacio-class frigate of the Philippine Navy in commission from 1977 to 1990.

Gregorio del Pilar was laid down in the United States by Lake Washington Shipyard at Houghton, Washington, as the Barnegat-class small seaplane tender USS Wachapreague (AVP-56), but was converted prior to completion into the motor torpedo boat tender USS Wachapreague (AGP-8).

Transferred to South Vietnam in 1972, she was commissioned as the patrol vessel RVNS Ngô Quyền (HQ-17).

On 22 May 1975 and 23 May 1975, a U.S. Coast Guard team inspected Ngô Quyền and five of her sister ships, which also had fled to the Philippines in April 1975.

[8] She was again recommissioned afterwards as BRP Gregorio del Pilar (PF-12), and due to the ship's poor condition she was finally decommissioned in April 1990.

[9] The Philippine Navy made plans to upgrade the entire ship class with new radar systems and the BGM-84 Harpoon long-range anti-ship cruise missile, but this did not materialize due to the worsening political and economic crisis in the Republic of the Philippines in the mid-1980s.