Danger Zone 4 is always closed. 

During launches, Vessel Safety Areas are strictly prohibited zones that drive the closure of most danger zones, except for Danger Zone #4. When a VSA is in effect, you'll notice more danger zones closed. While other areas outside the VSA, known as Vessel Hazard Areas, remain open for fishing, mariners should be aware of potential risks when entering these zones.

Although fishing is permitted in VHAs, it's crucial for mariners to understand the associated risks. Remember, the Frontier Control team is available on channels 6 and 16 to answer questions and offer help throughout the launch process.

SURFACE VESSELS ARE STRONGLY ADVISED TO AVOID THE AREA(S) BELOW DEFINED DURING SPECIFIED DATES / TIMES.

DURING OPERATIONS, FRONTIER CONTROL WILL BE MANAGING HAZARDOUS AREA SURFACE TRAFFIC ON VHF MARINE BAND CHANNEL 16 AND CHANNEL 6.

FOR MORE INFORMATION CONTACT 2 ROPS/DOS VIA TELEPHONE AT COMMERCIAL 805-606-8825 OR DSN 276-8825, OR EMAIL: 2ROPS.DOS@US.AF.MIL. LEAVE A MESSAGE ON THE ANSWERING MACHINE DURING NON-DUTY HOURS. OFFICE HOURS ARE 1400-2300Z OFFICE HOURS ARE 1400-2300Z DAILY MONDAY - FRIDAY.  THE OFFICE IS ALSO MANNED DURING LAUNCH OPERATIONS. 

 

BROADCAST NOTICE TO MARINERS 

HAZARDOUS WINDOW - 1 
A. REQUEST ISSUANCE FOR NAVAREA XII FOR OPERATIONS CONSIDERED HAZARDOUS TO SURFACE VESSELS WILL BE CONDUCTED WITHIN THE FOLLOWING OFFSHORE AREAS AS FOLLOWS:
HAZARD AREA - 1
             33° 17' 0" N                         121° 23' 0" W 
             33° 17' 0" N                         121° 26' 0" W 
             34° 43' 0" N                         120° 44' 0" W 
             34° 41' 0" N                         120° 33' 0" W 
             34° 27' 0" N                         120° 28' 0" W 
             TO BEGINNING

             33.28333333                         -121.38333333 
             33.28333333                         -121.43333333 
             34.71666667                         -120.73333333 
             34.68333333                         -120.55 
             34.45                                     -120.46666667 
             33.28333333                         -121.38333333 
             TO BEGINNING

B. HAZARDOUS OPERATIONS WILL BE CONDUCTED DURING THE FOLLOWING:
DATES/TIMES/MONTH/YEAR---- 
280159Z DEC TO 280246Z DEC 2025---- (PRIMARY) 
290159Z DEC TO 290246Z DEC 2025---- (BACKUP DAY) 
300159Z DEC TO 300246Z DEC 2025---- (BACKUP DAY) 
310159Z DEC TO 310246Z DEC 2025---- (BACKUP DAY) 
010159Z JAN TO 010246Z JAN 2026---- (BACKUP DAY) 
020159Z JAN TO 020246Z JAN 2026---- (BACKUP DAY) 
030159Z JAN TO 030246Z JAN 2026---- (BACKUP DAY) 

HAZARDOUS WINDOW - 2 
A. REQUEST ISSUANCE FOR NAVAREA XII FOR OPERATIONS CONSIDERED HAZARDOUS TO SURFACE VESSELS WILL BE CONDUCTED WITHIN THE FOLLOWING OFFSHORE AREAS AS FOLLOWS:
HAZARD AREA - 1
             31° 57' 0" N                         122° 13' 0" W 
             32° 5' 0" N                           122° 4' 0" W 
             31° 51' 0" N                         122° 5' 0" W 
             TO BEGINNING

             31.95                                     -122.21666667 
             32.08333333                         -122.06666667 
             31.85                                     -122.08333333 
             31.95                                     -122.21666667 
             TO BEGINNING

B. HAZARDOUS OPERATIONS WILL BE CONDUCTED DURING THE FOLLOWING:
DATES/TIMES/MONTH/YEAR---- 
280159Z DEC TO 280249Z DEC 2025---- (PRIMARY) 
290159Z DEC TO 290249Z DEC 2025---- (BACKUP DAY) 
300159Z DEC TO 300249Z DEC 2025---- (BACKUP DAY) 
310159Z DEC TO 310249Z DEC 2025---- (BACKUP DAY) 
010159Z JAN TO 010249Z JAN 2026---- (BACKUP DAY) 
020159Z JAN TO 020249Z JAN 2026---- (BACKUP DAY) 
030159Z JAN TO 030249Z JAN 2026---- (BACKUP DAY) 

HAZARDOUS WINDOW - 3 
A. REQUEST ISSUANCE FOR NAVAREA XII FOR OPERATIONS CONSIDERED HAZARDOUS TO SURFACE VESSELS WILL BE CONDUCTED WITHIN THE FOLLOWING OFFSHORE AREAS AS FOLLOWS:
HAZARD AREA - 1
             31° 57' 0" N                         122° 13' 0" W 
             31° 39' 0" N                         121° 49' 0" W 
             31° 15' 0" N                         121° 56' 0" W 
             30° 58' 0" N                         122° 17' 0" W 
             31° 16' 0" N                         122° 43' 0" W 
             31° 43' 0" N                         122° 37' 0" W 
             TO BEGINNING

             31.95                                     -122.21666667 
             31.65                                     -121.81666667 
             31.25                                     -121.93333333 
             30.96666667                         -122.28333333 
             31.26666667                         -122.71666667 
             31.71666667                         -122.61666667 
             31.95                                     -122.21666667 
             TO BEGINNING

B. HAZARDOUS OPERATIONS WILL BE CONDUCTED DURING THE FOLLOWING:
DATES/TIMES/MONTH/YEAR---- 
280159Z DEC TO 280304Z DEC 2025---- (PRIMARY) 
290159Z DEC TO 290304Z DEC 2025---- (BACKUP DAY) 
300159Z DEC TO 300304Z DEC 2025---- (BACKUP DAY) 
310159Z DEC TO 310304Z DEC 2025---- (BACKUP DAY) 
010159Z JAN TO 010304Z JAN 2026---- (BACKUP DAY) 
020159Z JAN TO 020304Z JAN 2026---- (BACKUP DAY) 
030159Z JAN TO 030304Z JAN 2026---- (BACKUP DAY) 

3. SURFACE VESSELS ARE STRONGLY ADVISED TO AVOID THIS AREA DEFINED DURING SPECIFIED DATES / TIMES.
4. DURING OPERATIONS, FRONTIER CONTROL WILL BE MANAGING HAZARDOUS AREA SURFACE TRAFFIC ON VHF MARINE BAND CHANNEL 16 AND CHANNEL 6. 5. 

 

United States Space Force

Official United States Space Force Website