MANILA: A warship and aircraft were deployed by the Philippine military to track a Russian submarine that passed through the South China Sea off the country’s western coast last week, a navy official said on Monday.
The Russian Kilo-class submarine was sighted in the Philippines’ exclusive economic zone on Nov. 28, about 80 nautical miles off the western province of Occidental Mindoro, according to the Armed Forces of the Philippines.
“At the onset, we were surprised. We were concerned why there was a submarine,” Commodore Roy Vincent Trinidad, Philippine Navy spokesman for the South China Sea, told Arab News.
“We sent four different aircraft over a span of four days, we made several sorties and we also dispatched a frigate, and we established communications.”
The Russian submarine, which identified itself as UFA 490, said it was waiting for improved weather conditions and was en route home to the eastern city of Vladivostok after wrapping up an exercise with the Malaysian navy.
It has since left the Philippines’ EEZ and was moving slowly in surface mode, which was “unusual,” Trinidad said.
Russia’s Kilo-class submarines are considered some of the stealthiest and have been regularly refined since the 1980s.
The Russian Embassy in Manila could not be reached for comment.
The submarine, like other foreign ships, has the right to pass through the Philippines’ EEZ under the UN Convention of the Law of the Sea’s freedom of navigation.
But the Russian vessel’s presence still raised concerns in Manila, which has dealt with increasing territorial confrontations in the disputed South China Sea, particularly between Chinese and Philippine coast guard and naval forces.
“All of that is very concerning. Any intrusion into the West Philippine Sea, of our EEZ, of our baselines, is very worrisome. So yes, it’s just another one,” President Ferdinand Marcos Jr. told reporters on Monday.
The Philippines, China and several other countries have overlapping claims in the disputed waters, a strategic waterway through which billions of dollars of goods pass each year.
Beijing has maintained its expansive claims of the area, despite a 2016 international tribunal ruling the historical assertion to it had no basis.
In 2022, China and Russia declared a “no limits” partnership when Russian President Vladimir Putin visited Beijing. The two countries carried out live-fire naval exercises in the South China Sea in July.