Navy says mine floating in Puget Sound was inert, left over from 2005 drill

A pair of U.S. Navy divers attach a rope to a suspected unexploded ordnance that was found drifting in the water between Brownsville Marina and Bainbridge Island, off Brownsville, Wash., Tuesday, Aug. 28, 2018.


By ASSOCIATED PRESS Published: August 30, 2018

SILVERDALE, Wash. — The U.S. Navy says the mine found floating in Puget Sound Tuesday was an inert mine used during a 2005 exercise at its Naval Undersea Warfare Command in Keyport.

The Navy said Thursday that the exercise was a chance for academics to demonstrate how unmanned underwater vehicles detect objects and avoid obstacles.

The object was reported Tuesday floating in waters between Brownsville and Bainbridge Island. Coast Guard and Navy bomb technicians detonated the mine later that night.

The Navy says inert training mines were placed in areas near Brownsville, Keyport and Bainbridge Island during the 2005 exercise. Since not all of them floated to the surface some were not recovered.

Officials say they will survey those areas to try to recover others that may have been left behind.