Eleven people are feared to have died when the general cargo vessel Fortune Life sank on Friday.
The ship is believed to have capsized as its cargo of 7,500 tons of feldspar shifted. Eight crew were rescued. The seafarers were made up of 18 Chinese and one Vietnamese.
The ship went down 130 nautical miles west of Luzon island in the north of the Philippines, while it was en route from Taiwan to Malaysia. Equasis says the ship is managed by a Hong Kong firm for a mainland Chinese unspecified entity.
The Philippine Coast Guard has been scouring the area for the missing seafarers with no luck come Sunday afternoon.