(Fox News) The commanding officer and three crewmembers aboard a U.S. Navy minesweeper have been relieved of their duties amid an investigation into how the $300 million ship got stuck on a reef near the Philippines and had to be scuttled.

The USS Guardian became stuck on a reef in the Tubbataha National Marine Park, a World Heritage Site in the Sulu Sea some 400 miles southeast of Manila in January.

The Navy said in a statement that the officer and crewmembers were relieved because the ship’s grounding did not comply with its navigation procedures and accountability standards.

Last week, the Navy chopped the ship up into sections and removed it, turning a valuable ship into scrap metal.

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