Exercises

Hazardous operations 0300Z to 1900Z daily 25 thru 27 mar in area bound by 71-10N 045-00E, 71-10N 052-44E,…

Barentsz Sea · HYDROARC 40/21

What this record establishes

Archived notice · 2021-03-27 20:00Z

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 XX 35/21 191730Z MAR 21.. Issued 2021-03-19 17:34Z. 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: Barentsz 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.

Current notices and reporting history in the Barentsz Sea →

Activity windows · 3 in this warning

opens (UTC)	closes (UTC)	local	length
2021-03-25 03:00Z	2021-03-25 19:00Z	—	16 h
2021-03-26 03:00Z	2021-03-26 19:00Z	—	16 h
2021-03-27 03:00Z	2021-03-27 19:00Z	—	16 h

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

issued: 2021-03-19 17:34Z
status: Archived notice
self-cancels: 2021-03-27 20:00Z
authority: NAVAREA XX 35/21 191730Z MAR 21.
NAVAREA: NAVAREA XX · named as the source of this relay
sea: Barentsz Sea
position: 70.821, 49.460
source: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

BARENTS SEA.
RUSSIA.
DNC 22.
1. HAZARDOUS OPERATIONS 0300Z TO 1900Z DAILY
   25 THRU 27 MAR IN AREA BOUND BY
   71-10N 045-00E, 71-10N 052-44E,
   70-42N 054-30E, 70-30N 054-30E,
   70-30N 045-00E.
2. CANCEL THIS MSG 272000Z MAR 21.

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

72 within 180 nm since 2011 · 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

17 military exercises listed in force · see all

Record snapshot 2026-09-25 02:01Z; 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.