Icebergs

North american ice service (nais) iceberg bulletin 120001Z apr

Labrador Sea · NAVAREA IV 414/24

What this record establishes

Archived notice · 2024-04-13 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 0/24 111900Z APR 24.. Issued 2024-04-11 20:56Z. 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 85/242024-01-27 · Archived notice
  2. NAVAREA IV 87/242024-01-28 · Archived notice
  3. NAVAREA IV 94/242024-01-29 · Archived notice
  4. NAVAREA IV 99/242024-01-30 · Archived notice
  5. NAVAREA IV 106/242024-01-31 · Archived notice
  6. NAVAREA IV 112/242024-02-01 · Archived notice
Compare all 78 notices, changes and original texts →

Current notices and reporting history in the Labrador Sea →

issued
2024-04-11 20:56Z
status
Archived notice
self-cancels
2024-04-13 00:01Z
authority
NAIS 0/24 111900Z APR 24.
NAVAREA
NAVAREA IV
issued by
NAIS
sea
Labrador Sea
position
55.335, -49.134
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 120001Z APR.
2. WARNING! THE INTERNATIONAL ICE PATROL
   IS EXPERIENCING REDUCED ICEBERG
   RECONNAISSANCE. ALL ICEBERG LIMITS
   REPORTED BELOW ARE ESTIMATED.
   PLEASE NAVIGATE WITH CAUTION.
3. ICEBERG LIMIT ALONG TRACKLINE JOINING
   47-25N 054-45W, 45-45N 054-10W,
   44-40N 046-20W, 46-00N 045-25W,
   50-30N 045-30W, 54-45N 049-40W.
4. ESTIMATED ICEBERG LIMIT ALONG
   TRACKLINE JOINING
   54-45N 049-40W, 56-20N 049-15W,
   58-55N 041-30W, 64-10N 036-00W,
   65-00N 027-30W.
5. WESTERN ICEBERG LIMIT ALONG TRACKLINE
   JOINING
   50-17N 060-36W, 48-52N 058-17W.
6. SEA ICE LIMIT ALONG TRACKLINES
   JOINING:
   A. 47-05N 064-49W, 48-39N 063-48W,
      48-51N 064-12W.
   B. 50-03N 066-44W, 49-49N 060-19W,
      50-43N 058-29W, 50-07N 057-40W.
   C. 49-30N 055-09W, 52-15N 052-45W,
      55-00N 053-45W, 56-30N 057-15W,
      60-00N 059-15W, 62-00N 056-15W.
   D. 62-25N 041-09W, 61-30N 041-12W,
      59-23N 043-04W, 59-23N 044-08W,
      59-26N 049-09W, 60-25N 051-44W,
      61-51N 051-03W, 60-58N 048-19W.
7. MOST RECENT RECONNAISSANCE:
   INTERIOR ICEBERG FLIGHT 07 APR 24.
8. 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.
9. FOR MORE REPORTING INFORMATION OR TO
   DOWNLOAD SHAPEFILES AND WEEKLY PREDICTIONS,
   GO TO WWW.NAVCEN.USCG.GOV/IIP.
10. CANCEL THIS MSG 130001Z APR 24.

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

2186 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 2026-10-02 12:27Z; 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.