Icebergs

North american ice service (nais) iceberg bulletin 250001Z nov

Davis Strait · NAVAREA IV 1148/20

What this record establishes

Archived notice · 2020-11-26 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 241901Z NOV 20.. Issued 2020-11-24 19:23Z. 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
Davis Strait. The map shows the reported line or operation extent; it is not a vessel track. Check the original wording for limits and qualifications.

Current notices and reporting history in the Davis Strait →

issued
2020-11-24 19:23Z
status
Archived notice
self-cancels
2020-11-26 00:01Z
authority
NAIS 241901Z NOV 20.
NAVAREA
NAVAREA IV
issued by
NAIS
sea
Davis Strait
position
60.125, -54.320
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 250001Z NOV.
2. ICEBERG LIMIT ALONG TRACKLINE JOINING
   51-36N 056-43W, 52-00N 053-30W,
   55-00N 052-00W.
3. ESTIMATED ICEBERG LIMIT ALONG
   TRACKLINE JOINING
   55-00N 052-00W, 61-00N 059-00W,
   62-00N 054-00W, 58-00N 048-00W,
   58-00N 040-00W, 64-00N 037-00W,
   66-00N 028-00W.
4. SEA ICE LIMIT ALONG TRACKLINES
   JOINING:
   A. 53-35N 056-05W, 55-00N 057-15W,
      55-30N 059-30W, 60-30N 064-05W,
      60-45N 064-40W, 60-40N 065-05W,
      59-25N 066-30W, 59-45N 067-50W,
      60-35N 067-10W, 61-05N 069-30W.
   B. 61-05N 069-35W, 62-35N 073-10W,
      63-05N 072-20W, 62-25N 070-45W,
      61-10N 065-00W, 61-15N 064-20W,
      62-00N 064-15W, 62-25N 062-25W,
      67-20N 058-00W.
   C. 62-25N 041-55W, 61-44N 041-40W,
      61-29N 041-38W, 60-58N 041-57W,
      60-40N 042-30W, 60-35N 042-41W,
      60-36N 042-49W.
5. MOST RECENT RECONNAISSANCE:
   SOUTHERN LIMIT ICEBERG FLIGHT 13 NOV 20.
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 260001Z NOV 20.

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

463 within 180 nm since 2012 · 4 in the last 12 months · 0 listed in force now

12
15
20
25
26

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

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

Record snapshot 2026-09-24 22:45Z; 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.