Icebergs

North american ice service (nais) iceberg bulletin 090001Z apr

Labrador Sea · NAVAREA IV 395/23

What this record establishes

Archived notice · 2023-04-10 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 081901Z APR 23.. Issued 2023-04-08 19:09Z. 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 1344/222022-12-12 · Archived notice
  2. NAVAREA IV 1346/222022-12-13 · Archived notice
  3. NAVAREA IV 1350/222022-12-14 · Archived notice
  4. NAVAREA IV 1353/222022-12-15 · Archived notice
  5. NAVAREA IV 1360/222022-12-16 · Archived notice
  6. NAVAREA IV 1366/222022-12-17 · Archived notice
Compare all 213 notices, changes and original texts →

Current notices and reporting history in the Labrador Sea →

issued
2023-04-08 19:09Z
status
Archived notice
self-cancels
2023-04-10 00:01Z
authority
NAIS 0/23 081901Z APR 23.
NAVAREA
NAVAREA IV
issued by
NAIS
sea
Labrador Sea
position
54.721, -50.156
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 090001Z APR.
2. ICEBERG LIMIT ALONG TRACKLINE JOINING
   46-55N 055-50W, 44-20N 054-00W,
   43-45N 047-05W, 47-00N 045-30W,
   53-00N 048-00W, 58-35N 055-40W.
3. ESTIMATED ICEBERG LIMIT ALONG
   TRACKLINE JOINING
   58-35N 055-40W, 58-10N 051-40W,
   56-15N 047-25W, 58-30N 041-35W,
   63-40N 037-30W, 65-25N 029-15W.
4. WESTERN ICEBERG LIMIT ALONG TRACKLINE
   JOINING
   50-15N 060-58W, 48-40N 058-29W.
5. SEA ICE LIMIT ALONG TRACKLINES
   JOINING:
   A. 46-07N 059-49W, 46-29N 059-00W,
      47-10N 059-23W, 48-31N 063-39W,
      49-13N 063-52W, 48-50N 061-56W,
      50-01N 058-08W, 48-33N 059-14W.
   B. 47-16N 052-49W, 47-00N 051-03W,
      47-58N 050-20W, 51-48N 053-08W,
      53-52N 051-13W, 56-22N 056-02W,
      58-03N 058-31W, 62-00N 058-58W,
      63-06N 057-49W.
   C. 62-25N 041-22W, 62-01N 041-15W,
      59-57N 042-24W, 59-24N 043-36W,
      59-23N 045-32W, 59-56N 051-13W,
      61-38N 052-02W, 62-26N 050-48W,
      61-54N 049-48W, 61-03N 048-21W.
6. MOST RECENT RECONNAISSANCE:
   INTERIOR GENERAL FLIGHT 08 APR 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 100001Z APR 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

2158 within 180 nm since 1999 · 0 in the last 12 months · 0 listed in force now

99
00
05
10
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

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

Record snapshot 2026-10-03 13:50Z; 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.