The Coast Guard is establishing two temporary safety zones to protect personnel, vessels, and the marine environment from potential hazards created by commercial spaceflight activities. One safety zone is in the navigable waters of South Bay, TX and the other is in the navigable waters of the Gulf of Mexico, within 12 nautical miles. Entry of vessels or persons into these zones are prohibited unless specifically authorized by the Captain of the Port, Sector Corpus Christi (COTP) or a designated representative.
Source: Federal Register USCG
Link: Safety Zone; Gulf of Mexico and South Bay, Boca Chica Beach, TX