The Coast Guard is establishing a temporary safety zone for navigable waters surrounding Key West, Florida, for a fireworks display. The safety zone will encompass all waters within a 800-foot radius of the White Street Pier in Key West, FL. The safety zone is needed to protect personnel, vessels, the marine environment from the potential hazards created by a fireworks display. Entry of vessels or persons into this zone is prohibited unless specifically authorized by the Captain of the Port (COTP) Key West or a designated representative.
Source: Federal Register USCG
Link: Safety Zone; Key West July 4th Fireworks, Key West, FL