Exercises

Hazardous operations 230404Z to 230826Z jul within 30 miles of trackline joining 02-47N 177-05E, 04-08N…

Gulf of Guinea · HYDROPAC 672/99

What this record establishes

Archived notice · 1999-07-23 09:26Z

This notice comes from the historical archive. Its archived status does not establish when or how the reported situation ended.

Source and dates: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · CCAFS 45RANS SCHEDULING CENTER OP #6204 221433Z JUL 99. Issued 1999-07-22 17:40Z. First collected 2026-08-17 13:38Z; last seen in collection 2026-08-17 15:46Z. Collection dates record ingestion, not a new incident or a fresh field observation.
Location covered: Gulf of Guinea. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.

Current notices and reporting history in the Gulf of Guinea →

Activity windows · 1 in this warning

opens (UTC)	closes (UTC)	local	length
1999-07-23 04:04Z	1999-07-23 08:26Z	—	4 h 22

Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.

issued: 1999-07-22 17:40Z
status: Archived notice
self-cancels: 1999-07-23 09:26Z
authority: CCAFS 45RANS SCHEDULING CENTER OP #6204 221433Z JUL 99
issued by: CCAFS
sea: Gulf of Guinea
position: 4.547, 0.150
source: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

1. HAZARDOUS OPERATIONS 230404Z TO 230826Z JUL WITHIN
   30 MILES OF TRACKLINE JOINING 02-47N 177-05E,
   04-08N 179-25E, 05-31N 178-08W, 06-53N 175-41W,
   08-15N 173-13W, 09-17N 171-19W, 10-36N 168-49W,
   11-55N 166-17W, 13-12N 163-43W, 14-27N 161-08W,
   15-41N 158-30W, 16-56N 156-07W, 18-04N 153-27W,
   19-10N 150-45W, 20-13N 148-01W, 21-06N 145-33W,
   21-58N 143-01W, 22-53N 140-10W, 23-44N 137-16W,
   24-31N 134-20W, 25-15N 131-21W, 26-04N 127-36W.
2. CANCEL THIS MSG 230926Z JUL.

Reading this warning

Hazardous operations: NGA's heading for activities that make an area dangerous — most often rocket launches, space debris and weapons firings, and some open-ended danger areas.
Date-time group (DTG): A compact UTC timestamp — day, hour and minute followed by Z — such as 201500Z for the 20th at 15:00 UTC.
Within a radius of: A circular area — every position within a stated distance of a point.
Track line joining: Introduces a route through a series of positions — a cable route, a tow's track or a survey line.
Position (degrees and minutes): How warnings write positions: degrees, a hyphen, then minutes, with N/S and E/W — 49-40.8N 003-43.8W.
CANCEL THIS MSG: The warning's own expiry: a line telling the reader when the message cancels itself.

All warning terms →

Collected reports in this area · military exercises

11 within 180 nm since 1999 · 0 in the last 12 months · 0 listed in force now

Counts include repeat notices about the same situation. NGA archive coverage ends 2024-05; live collection began 2026-08-17. The period between them is incomplete. An empty year is not evidence that no hazards occurred.

Month of issue in the collected archive

All available years combined. Uneven collection and repeat bulletins affect these counts; this chart does not measure the seasonality or probability of incidents.

Nearby notices listed in force · within 120 nm

No other collected notice is currently listed in force within this radius. This does not establish safe conditions.

Worldwide in the collected sources

10 military exercises listed in force · see all

Record snapshot 2026-10-03 06:18Z; source collection times vary.

Exercises

Gunnery, firing and naval exercise areas. All current military exercises →

Not for navigation. This is a re-rendering of an official navigational warning for awareness; mariners must use official NAVAREA broadcasts and their national MSI service.