Icebergs

REVISION-01 north american ice service (nais) iceberg bulletin

Gulf of St. Lawrence · NAVAREA IV 101/15

What this record establishes

Archived notice · 2015-02-05 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 041356ZZ FEB 15.. Issued 2015-02-04 13:56Z. 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
Gulf of St. Lawrence. 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 100/152015-02-03 · Archived notice
  2. NAVAREA IV 101/15 · this notice2015-02-04 · Archived notice
Compare all 2 notices, changes and original texts →

Current notices and reporting history in the Gulf of St. Lawrence →

issued
2015-02-04 13:56Z
status
Archived notice
self-cancels
2015-02-05 00:01Z
authority
NAIS 041356ZZ FEB 15.
NAVAREA
NAVAREA IV
issued by
NAIS
sea
Gulf of St. Lawrence
position
52.122, -56.536
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

REVISION-01 NORTH AMERICAN ICE SERVICE (NAIS) ICEBERG BULLETIN.
1. 040001Z FEB ICEBERG LIMIT ALONG TRACKLINE JOINING
   47-40N 052-45W, 50-45N 047-00W, 52-00N 047-00W,
   60-00N 058-00W.
2. WESTERN ICEBERG LIMIT ALONG TRACKLINE BETWEEN
   51-39N 056-33W AND 51-24N 056-29W.
3. SEA ICE LIMIT ALONG TRACKLINES JOINING:
   A. 48-05N 052-50W, 51-50N 049-45W, 54-30N 052-00W,
      56-25N 055-55W, 58-00N 057-30W.
   B. 45-00N 065-10W AND 45-30N 065-10W.
   c. 46-30N 060-25W, 46-50N 059-30W, 48-20N 061-40W,
      48-50N 060-50W, 49-30N 061-20W, 49-30N 060-00W,
      50-30N 057-40W, 48-40N 059-00W.
   D. 48-05N 059-00W AND 48-30N 059-00W.
   E. 47-20N 055-20W AND 47-30N 056-50W.
   F. 58-00N 057-30W, 60-55N 059-05W, 63-05N 057-50W.
4. 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.
5. CANCEL NAVAREA IV 100/15.
6. CANCEL THIS MSG 050001Z FEB 15.

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.
Cancellation reference
A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
NAVAREA
One of the 21 ocean areas of the World-Wide Navigational Warning Service, each with a coordinator that broadcasts long-range warnings.
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

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

99
00
05
10
15
20
22

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 02:35Z; 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.