SANYA, Dec. 13-- Guided missile frigate Sanya officially joined the service of the People's Liberation Army (PLA) Navy during a delivery ceremony held Friday, according to military sources.

Independently developed and made by China, the Sanya is capable of attacking enemy ships and submarines, and is especially adept for use in long-distance vigilance and aerial defense combat.

The ship will serve as a new-generation leading battleship for the PLA Navy, the sources said.

During Friday's ceremony, Wang Kai, captain of the Sanya, vowed that the ship's crew will manage and use their weapons well, strive to safeguard national sovereignty, and contribute to building the country into a strong oceanic power.