Exercises

Hazardous operations 0206Z to 0323Z daily 02 aug thru 02 sep in area bound by 76-30N 159-28E, 76-09N…

Greenland Sea · HYDROARC 174/17

What this record establishes

Archived notice · 2017-08-03 23:18Z

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) · MARINE GUYANE 101447Z JUL 17.. Issued 2017-07-28 03:31Z. 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
Greenland Sea. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.

Related notices and cancellation links

Current notices and reporting history in the Greenland Sea →

Activity windows · 32 in this warning

opens (UTC)closes (UTC)locallength
2017-08-02 02:06Z2017-08-02 03:23Z—1 h 17
2017-08-03 02:06Z2017-08-03 03:23Z—1 h 17
2017-08-04 02:06Z2017-08-04 03:23Z—1 h 17
2017-08-05 02:06Z2017-08-05 03:23Z—1 h 17
2017-08-06 02:06Z2017-08-06 03:23Z—1 h 17
2017-08-07 02:06Z2017-08-07 03:23Z—1 h 17
2017-08-08 02:06Z2017-08-08 03:23Z—1 h 17
2017-08-09 02:06Z2017-08-09 03:23Z—1 h 17
… 24 more

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

issued
2017-07-28 03:31Z
status
Archived notice
self-cancels
2017-09-02 04:23Z
authority
MARINE GUYANE 101447Z JUL 17.
issued by
COMAR GUYANE
sea
Greenland Sea
position
79.150, -5.254
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

EASTERN SIBERIAN SEA.
CHUKCHI SEA.
ARCTIC OCEAN.
DNC 27.
1. HAZARDOUS OPERATIONS 0206Z TO 0323Z DAILY
   02 AUG THRU 02 SEP IN AREA BOUND BY
   76-30N 159-28E, 76-09N 161-20E,
   81-12N 142-16W, 81-46N 141-54W.
2. CANCEL THIS MSG 020423Z SEP 17.

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.
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.

All warning terms →

Collected reports in this area · military exercises

1 within 180 nm since 2017 · 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

J
F
M
A
M
J
J
A
S
O
N
D

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

28 military exercises listed in force · see all

Record snapshot 2026-10-01 20:20Z; 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.