Safety Zone; Navy UNDET, Apra Outer Harbor and Piti, GU

The Coast Guard is establishing a temporary safety zone for underwater detonation operations in the waters of Apra Outer Harbor and Piti, Guam. This rule is effective from 8 a.m. until 4 p.m. on April 27th through April 28th, 2017. The Coast Guard believes this safety zone regulation is necessary to protect all persons and vessels that would otherwise transit or be within the affected areas from possible safety hazards associated with underwater detonation operations. Entry of vessels or persons into these zones is prohibited, unless specifically authorized by the Captain of the Port Guam.