Icebergs

North american ice service (nais) iceberg bulletin 210001Z dec

Labrador Sea · NAVAREA IV 1139/21

What this record establishes

Archived notice · 2021-12-22 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) · NAIS 201914Z DEC 21.. Issued 2021-12-20 19:41Z. 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
Labrador Sea. The map shows the reported line or operation extent; it is not a vessel track. Check the original wording for limits and qualifications.

Related notices and cancellation links

These reports were linked by category and sea, with positions within 30 nautical miles and issue dates within 30 days of another report's recorded in-force span. Links can extend through other members, so the full group can cover a larger area or period. Proximity does not confirm that they describe one incident.

  1. NAVAREA IV 1116/212021-12-12 · Archived notice
  2. NAVAREA IV 1118/212021-12-13 · Archived notice
  3. NAVAREA IV 1120/212021-12-14 · Archived notice
  4. NAVAREA IV 1124/212021-12-15 · Archived notice
  5. NAVAREA IV 1128/212021-12-16 · Archived notice
  6. NAVAREA IV 1131/212021-12-17 · Archived notice
Compare all 42 notices, changes and original texts →

Current notices and reporting history in the Labrador Sea →

issued
2021-12-20 19:41Z
status
Archived notice
self-cancels
2021-12-22 00:01Z
authority
NAIS 201914Z DEC 21.
NAVAREA
NAVAREA IV
issued by
NAIS
sea
Labrador Sea
position
56.327, -53.920
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

1. NORTH AMERICAN ICE SERVICE (NAIS)
   ICEBERG BULLETIN 210001Z DEC.
2. ICEBERG LIMIT ALONG TRACKLINE JOINING
   52-26N 055-50W, 52-30N 052-15W,
   54-15N 051-15W, 56-30N 055-30W,
   58-00N 057-00W.
3. ESTIMATED ICEBERG LIMIT ALONG
   TRACKLINE JOINING
   58-00N 057-00W, 60-50N 060-15W,
   62-05N 053-55W, 59-45N 049-10W,
   58-25N 044-35W, 58-30N 040-25W,
   64-10N 037-20W, 65-00N 029-35W.
4. SEA ICE LIMIT ALONG TRACKLINES
   JOINING:
   A. 45-41N 062-22W, 45-58N 063-15W,
      45-53N 062-29W, 46-23N 062-06W.
   B. 46-28N 062-37W, 46-39N 063-38W,
      47-08N 064-00W, 47-05N 064-41W,
      48-27N 064-07W, 48-45N 064-10W.
   C. 49-09N 066-25W, 49-02N 067-44W,
      50-02N 065-41W, 48-46N 062-05W,
      51-08N 057-21W, 47-46N 059-54W,
      47-18N 059-15W, 47-38N 058-26W.
   D. 50-08N 056-07W, 51-39N 055-06W,
      53-30N 055-22W, 56-24N 060-07W,
      59-30N 062-52W, 60-27N 062-33W,
      62-00N 059-56W, 64-35N 057-56W.
5. MOST RECENT RECONNAISSANCE:
   EASTERN LIMIT ICEBERG FLIGHT 15 DEC 21.
6. REPORT POSITION AND TIME OF ANY ICEBERGS
   SEA ICE OR STATIONARY RADAR TARGETS THAT
   MAY LIKELY BE ICE TO THE NEAREST CANADIAN
   COAST GUARD MARINE COMMUNICATIONS AND
   TRAFFIC SERVICE STATION OR
   USING INMARSAT CODE 42.
7. FOR MORE REPORTING INFORMATION OR TO
   DOWNLOAD SHAPEFILES AND WEEKLY PREDICTIONS,
   GO TO WWW.NAVCEN.USCG.GOV/IIP.
8. CANCEL THIS MSG 220001Z DEC 21.

Reading this warning

Icebergs and ice limits
Icebergs, smaller pieces of glacier ice and the published limit of known ice.
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.
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.
Inmarsat-C / SafetyNET
The satellite system that carries NAVAREA warnings to ships at sea, and the terminal number rescue centres give for reports.
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 · iceberg & sea-ice bulletins

1413 within 180 nm since 2012 · 0 in the last 12 months · 0 listed in force now

12
15
20
24

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

6 iceberg & sea-ice bulletins listed in force · see all

Record snapshot 2026-10-01 19:12Z; source collection times vary.

Icebergs

Iceberg limits and reported bergs — mostly the North American Ice Service (International Ice Patrol) bulletins in the North Atlantic. All current iceberg & sea-ice bulletins →

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.