Seoul: South Korea's Navy launched a maneuvering exercise on Tuesday in the Yellow Sea to prepare against possible North Korean maritime infiltration.

"The exercise was held under many different situations that could arise at sea," an unidentified navy official was quoted as saying by Yonhap News Agency.

"It was also aimed at developing interoperability among units from all branches of the service."

The one-day exercise took place in waters near Pyeongtaek Port, some 70 kilometers south of Seoul. It involved destroyer Sejong the Great, the South's first Aegis destroyer equipped with an integrated weapons control system, plus about 20 other destroyers, frigates, patrollers and high-speed boats, Yonhap said.

Under the scenario of a North Korean submarine crossing the tense de facto sea border, the navy also deployed the Lynx anti-ship helicopter and P-3C anti-submarine surveillance aircraft. An air force tactical aircraft and an army helicopter also joined the exercise, the official said.

South Korea has accused North Korea of sinking a South Korean warship with a torpedo attack near the disputed western sea border in March last year. North Korea has strongly denied its involvement in the incident.