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.

SUBJECT: Broadcast Notice to Mariners -- Broadcast No. 2511

1. Operations considered hazardous to surface vessels will be conducted within the offshore areas of Vandenberg SFB on the dates and times indicated below.
2. The following Danger Zones will be closed to entry in accordance with Title 33, CFR 334.1130, as published in the current Federal Register.

DANGER ZONES
1, 4

SCHEDULED DATE/TIME
Primary: 4 Nov 25 at 8:01 PM. through 5 Nov 25 at 5:35 AM.
Back up: 5 Nov 25 at 8:01 PM. through 6 Nov 25 at 5:35 AM.

TYPE OF OPERATION
HAZARDOUS

3. Mariners operating in the Vandenberg SFB area should dial (800) 648-3019 for the current status of Vandenberg Danger Zones.

4. In addition to the Danger Zones, the area enclosed by the following coordinates will also be closed during the times specified above:
34 DEG 52 MIN N 120 DEG 44 MIN W
34 DEG 53 MIN N 120 DEG 44 MIN W
34 DEG 54 MIN N 120 DEG 38 MIN W
34 DEG 53 MIN N 120 DEG 37 MIN W
34 DEG 51 MIN N 120 DEG 38 MIN W

5. If you have any questions, please contact 2 ROPS/DOS at (805) 606-8825.