Escambia County officials closed Pensacola Pass last night to deploy boom across the opening of the pass. They will continue to do so during incoming tides to keep oil from the sensitive waterways. During closures, navigation through the pass will be restricted to necessary watercraft. The pass will reopen to boaters during outgoing tide. The Intracoastal Waterways will remain open. The same goes for Perdido Pass. Meanwhile, some Escambia marina owners want to know how to keep oil-covered boats from contaminating the water when they return.