Exercises

Hazardous operations 30 and 31 may in area bound by 06-24N 003-30E, 06-16N 004-02E, 05-52N 004-02E, 05-55N…

Gulf of Guinea · HYDROLANT 1666/18

What this record establishes

Archived notice · 2018-06-01 00:01Z

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) · NAVAREA II 230/18 261223Z MAY 18.. Issued 2018-05-26 13:24Z. 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 →

issued: 2018-05-26 13:24Z
status: Archived notice
authority: NAVAREA II 230/18 261223Z MAY 18.
NAVAREA: NAVAREA II · named as the source of this relay
sea: Gulf of Guinea
position: 6.103, 3.566
source: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

GULF OF GUINEA.
NIGERIA.
DNC 01.
1. HAZARDOUS OPERATIONS 30 AND 31 MAY IN AREA BOUND BY
   06-24N 003-30E, 06-16N 004-02E,
   05-52N 004-02E, 05-55N 002-59E,
   06-13N 003-08E.
2. CANCEL THIS MSG 01 JUN 18.

Reading this warning

DNC (Digital Nautical Chart): A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
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.
Area bound by: Introduces a list of positions that are the corners of an area — the polygon the warning applies to.
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

2 within 180 nm since 2018 · 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.

Gunnery exercises on 28 feb in area within ten miles of 05-46N 002-14E2020-02-25

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

9 military exercises listed in force · see all

Record snapshot 2026-10-03 18:51Z; 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.