The Philippines on Friday said it "strongly objects" to China's deployment of a new patrol vessel in the South China Sea, where the two countries have a seething maritime territorial dispute.

Such patrols will not boost China's claim to the disputed territory where the two countries have had a standoff since April, Department of Foreign Affairs spokesman Raul Hernandez said in a statement.

"The Philippines strongly objects to the Chinese patrol of Philippine maritime domain in the West Philippine Sea," the statement said, using the local name for the South China Sea.

It called on China to respect the country's "territorial sovereignty and EEZ", referring to the Philippines' 200-nautical-mile exclusive economic zone.

China's official Xinhua news agency said on Thursday an ocean-going patrol vessel equipped with a helipad would be deployed to the South China Sea, the first of its kind in the area.

In late November, China said it had granted its border patrol police the right to board and turn away foreign ships entering the disputed waters, raising fears of a confrontation.

Both the Philippines and China have overlapping claims over parts of the South China Sea, a major shipping route that is also believed to hold vast mineral resources.

Tensions between China and the Philippines have risen in the area since April after ships from both countries had a standoff over a rock outcropping known as the Scarborough Shoal.

While the Philippines has withdrawn its ships, it says China reneged on an agreement to pull out its own vessels.

China claims the shoal as well as nearly all of the South China Sea, even waters close to the coasts of neighbouring countries. The Philippines says the shoal is well within its EEZ.