Icebergs

North american ice service (nais) iceberg bulletin 160001Z apr

Labrador Sea · NAVAREA IV 430/24

What this record establishes

Archived notice · 2024-04-17 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 151900Z APR 24.. Issued 2024-04-15 20:32Z. 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 430/24 · this notice2024-04-15 · Archived notice
  2. NAVAREA IV 432/242024-04-16 · Archived notice
  3. NAVAREA IV 438/242024-04-17 · Archived notice
  4. NAVAREA IV 443/242024-04-18 · Archived notice
  5. NAVAREA IV 450/242024-04-19 · Archived notice
  6. NAVAREA IV 452/242024-04-20 · Archived notice
Compare all 25 notices, changes and original texts →

Current notices and reporting history in the Labrador Sea →

issued
2024-04-15 20:32Z
status
Archived notice
self-cancels
2024-04-17 00:01Z
authority
NAIS 0/24 151900Z APR 24.
NAVAREA
NAVAREA IV
issued by
NAIS
sea
Labrador Sea
position
57.000, -48.526
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 160001Z APR.
2. ICEBERG LIMIT ALONG TRACKLINE JOINING
   47-29N 052-45W, 48-05N 049-45W,
   51-00N 048-00W, 54-45N 049-40W.
3. ESTIMATED ICEBERG LIMIT ALONG
   TRACKLINE JOINING
   54-45N 049-40W, 56-20N 049-15W,
   58-55N 041-30W, 62-30N 038-30W,
   63-55N 035-10W, 65-00N 027-30W.
4. WESTERN ICEBERG LIMIT ALONG TRACKLINE
   JOINING
   50-35N 059-55W, 49-20N 057-50W.
5. SEA ICE LIMIT ALONG TRACKLINES
   JOINING:
   A. 47-28N 064-52W, 48-12N 063-58W,
      48-45N 064-10W.
   B. 50-13N 063-13W, 49-51N 060-34W,
      51-12N 057-42W, 50-48N 057-04W.
   C. 49-34N 054-29W, 52-49N 051-57W,
      55-39N 052-28W, 56-59N 057-13W,
      59-45N 059-00W, 62-00N 056-15W.
   D. 62-25N 040-31W, 58-49N 042-09W,
      58-57N 046-46W, 59-18N 049-07W,
      60-55N 053-11W, 61-37N 052-30W,
      61-17N 049-44W, 60-48N 048-29W.
6. MOST RECENT RECONNAISSANCE:
   SOUTHERN LIMIT ICEBERG FLIGHT 14 APR 24.
7. NOTE THE SIGNIFICANT REDUCTION
   OF THE ICEBERG LIMIT SINCE 150001Z APR
   BULLETIN DUE TO RECENT RECONNAISSANCE.
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 170001Z 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

2505 within 180 nm since 2002 · 18 in the last 12 months · 1 listed in force now

02
05
10
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

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

Record snapshot 2026-09-28 22:48Z; 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.