Icebergs

North american ice service (nais) iceberg bulletin 240001Z nov

Labrador Sea · NAVAREA IV 1356/23

What this record establishes

Archived notice · 2023-11-25 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 0/23 232042Z NOV 23.. Issued 2023-11-23 20:52Z. 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 1297/232023-11-07 · Archived notice
  2. NAVAREA IV 1355/232023-11-22 · Archived notice
  3. NAVAREA IV 1356/23 · this notice2023-11-23 · Archived notice
  4. NAVAREA IV 1361/232023-11-24 · Archived notice
Compare all 4 notices, changes and original texts →

Current notices and reporting history in the Labrador Sea →

issued
2023-11-23 20:52Z
status
Archived notice
self-cancels
2023-11-25 00:01Z
authority
NAIS 0/23 232042Z NOV 23.
NAVAREA
NAVAREA IV
issued by
NAIS
sea
Labrador Sea
position
59.861, -56.607
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 240001Z NOV.
2. ICEBERG LIMIT ALONG TRACKLINE JOINING
   51-33N 055-31W, 51-45N 054-45W,
   53-45N 050-30W, 55-00N 050-30W,
   58-30N 057-00W.
3. ESTIMATED ICEBERG LIMIT ALONG
   TRACKLINE JOINING
   58-30N 057-00W, 60-25N 053-05W,
   58-40N 043-20W, 59-10N 041-10W,
   62-30N 038-15W, 65-10N 027-40W.
4. WESTERN ICEBERG LIMIT ALONG TRACKLINE
   JOINING
   51-41N 056-31W, 51-31N 056-03W.
5. SEA ICE LIMIT ALONG TRACKLINES
   JOINING:
   A. 52-28N 055-41W, 53-48N 055-18W,
      55-59N 059-47W, 60-31N 064-04W,
      60-54N 064-29W, 58-50N 067-44W,
      61-12N 069-20W, 62-54N 074-24W,
      62-32N 080-02W, 61-35N 080-51W,
      61-23N 078-50W, 58-29N 078-55W,
      58-03N 077-18W.
   B. 61-59N 066-00W, 62-13N 064-00W,
      64-42N 063-28W, 64-51N 057-48W.
   C. 62-22N 041-46W, 61-42N 041-45W,
      60-21N 042-04W, 60-39N 042-45W.
6. MOST RECENT RECONNAISSANCE:
   INTERIOR SATELLITE PASS 23 NOV 23.
7. 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.
8. FOR MORE REPORTING INFORMATION OR TO
   DOWNLOAD SHAPEFILES AND WEEKLY PREDICTIONS,
   GO TO WWW.NAVCEN.USCG.GOV/IIP.
9. CANCEL THIS MSG 250001Z NOV 23.

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

363 within 180 nm since 2009 · 0 in the last 12 months · 0 listed in force now

09
10
15
20
23

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

Worldwide in the collected sources

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

Record snapshot 2026-10-02 19:52Z; 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.