“The ship is currently stuck on the reef, approximately 80 miles east-southeast of Palawan Island,” said the statement released by the Navy’s Seventh Fleet.
“The crew is currently working to determine the best method of safely extracting the ship.”
According to the statement, the Avenger-Class mine countermeasures ship, with a crew of 80, had just completed a port call at Subic Bay in the Philippines and was en route to its next port of call.
USS Guardian is based in the city of Sasebo, Japan.
The US Navy said no one was injured and there were no indications of fuel leak from the vessel.
The US Navy says its minesweeper USS Guardian has run aground in the Sulu Sea off the Philippines and is stuck on a reef.
The incident took place on the Tubataha Reef near Palawan Island at about 2:25 a.m. local time on Thursday, a US Navy statement said.