The BRP Francisco Dagohoy (PF-10)[3] was an Andrés Bonifacio-class frigate of the Philippine Navy that served from 1979 to 1985.

Commissioned in October 1944, Castle Rock served in the Central Pacific during and after World War II.

While in Coast Guard service, her primary duty was to patrol ocean stations, reporting weather data and engaging in search-and-rescue and law-enforcement operations.

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

"[5] After Trần Bình Trọng had been cleaned and repaired, the United States formally transferred her to the Republic of the Philippines on 5 April 1976.

The main engines could propel the 1,766-displacement-ton (standard load) ship at a maximum speed of around 18 knots (33 km/h).

[8] 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 Philippines in the mid-1980s.