Section 165.782 - Safety Zone; restricted visibility in Tampa Bay(a)Regulated areas. The following areas are established as safety zones during the specified conditions:(1) Zone 1 (Interbay) means all navigable waters within a box marked by the following coordinates: 27°52'56" N., 82°29'44" W.; thence to 27°52'50" N., 82°23'41" W.; thence to 27°57'27" N., 82°23'50" W. thence to 27°57'19" N., 82°29'39" W.. This encompasses all Navigable waterways North of Hillsborough Cut "C" Channel LB "25" (LLNR 23445) & "26" (LLNR 23450).(2) Zone 2 (East Tampa/Big Bend) means all navigable waters within a box marked by the following coordinates: 27°52'50" N., 82°23'41" W.; thence to 27°46'36" N.; 82°24'04" W.; thence to 27°46'29" N., 82°31'21" W.; thence to 27°52'59" N., 82°31'24" W. This zone encompasses all navigable waterways between Hillsborough Cut "C" Channel LB "25" (LLNR 23445) & "26" (LLNR 23450) to Cut "6F" (LLNR 22830) Channel.(3) Zone 3 (Old Tampa Bay) means all navigable waters within a box marked by the following coordinates: 27°46'29" N., 82°31'21" W.; 28°01'58" N., 82°31'39" W.; thence to 28°02'01" N., 82°43'20" W.; thence to 27°46'15" N., 82°43'24" W. This zone encompasses all navigable waterways between all of Old Tampa Bay to Cut "6F" (LLNR 22830) Channel.(4) Zone 4 (Middle Tampa Bay) means all navigable waters within a box marked by the following coordinates: 27°46'34" N., 82°34'04" W.; thence to 27°38'40" N., 82°31'54" W.; thence to 27°44'38" N., 82°40'44" W.; thence to 27°46'15" N., 82°40'46" W. This zone encompasses all navigable waterways between Cut "6F" (LLNR 22830) Channel to Tampa Bay "1C" (LLNR 22590).(5) Zone 5 (Lower Tampa Bay/Manatee) means all navigable waters within a box marked by the following coordinates: 27°44'33" N., 82°40'37" W.; thence to 27°58'59" N., 82°40'34" W.; thence to 27°36'18" N., 82°38'57" W.; thence to 27°34'10" N., 82°34'50" W.; thence to 27°37'56" N., 82°31'15" W. This zone encompasses all navigable waterways between Tampa Bay "1C" (LLNR 22590) to Sunshine Skyway Bridge.(6) Zone 6 (Mullet Key) means all navigable waters within a box marked by the following coordinates: 27°38'59" N., 82°40'35" W.; thence to 27°36'44" N., 82°44'13" W.; thence to 27°32'20" N., 82°44'37" W.; thence to 27°31'18" N., 82°38'59" W.; thence to 27°34'09" N., 82°34'53" W.; thence to 27°36'15" N., 82°39'00" W. This zone encompasses all navigable waterways between the Sunshine Skyway Bridge to Mullet Key Channel LB "21" (LLNR 22365) & "22" (LLNR 22370).(7) Zone 7 (Egmont Entrance) means all navigable waters within the area encompassed by the following coordinates: 27°36'27" N., 82°44'14" W.; thence to 27°39'46" N., 82°44'45" W.; thence to 27°39'36" N., 83°05'10" W.; thence to 27°32'29" N., 83°04'50" W.; thence to 27°32'21" N., 82°44'42" W. This zone includes the fairway anchorages.(8) All coordinates are North American Datum 1983.(b)Definition.(1)Designated Representative means Coast Guard Patrol Commanders including Coast Guard coxswains, petty officers and other officers operating Coast Guard vessels, and federal, state, and local officers designated by or assisting the COTP, in the enforcement of regulated navigation areas, safety zones, and security zones.(c)Regulations.(1) Vessel should not commence an inbound, shift, or outbound transit during periods where visibility is less than one nautical mile due to fog or inclement weather.(2) The COTP may open or close Tampa Bay or specific zones to vessel traffic described in the regulated areas section of this chapter.USCG-2014-0764, 80 FR 36716, June 26, 2015