Icebergs

291201Z may iceberg limit along trackline joining 47-46N 056-37W, 44-45N 056-15W, 42-00N 049-30W, 42-00N…

North Atlantic Ocean · NAVAREA IV 442/17

What this record establishes

Archived notice · 2017-05-30 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 291342Z MAY 17.. Issued 2017-05-29 14:04Z. 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
North Atlantic Ocean. 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 375/172017-05-08 · Archived notice
  2. NAVAREA IV 378/172017-05-09 · Archived notice
  3. NAVAREA IV 386/172017-05-10 · Archived notice
  4. NAVAREA IV 388/172017-05-11 · Archived notice
  5. NAVAREA IV 391/172017-05-12 · Archived notice
  6. NAVAREA IV 393/172017-05-13 · Archived notice
Compare all 27 notices, changes and original texts →

Current notices and reporting history in the North Atlantic Ocean →

issued
2017-05-29 14:04Z
status
Archived notice
self-cancels
2017-05-30 00:01Z
authority
NAIS 291342Z MAY 17.
NAVAREA
NAVAREA IV
issued by
NAIS
sea
North Atlantic Ocean
position
53.752, -47.392
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

NORTH AMERICAN ICE SERVICE (NAIS) ICEBERG BULLETIN.
1. 291201Z MAY ICEBERG LIMIT ALONG TRACKLINE JOINING
   47-46N 056-37W, 44-45N 056-15W, 42-00N 049-30W,
   42-00N 048-00W, 46-00N 043-00W, 46-30N 043-00W,
   53-00N 048-30W.
2. ESTIMATED ICEBERG LIMIT ALONG TRACKLINE JOINING
   53-00N 048-30W, 56-00N 049-00W, 57-00N 036-00W,
   64-00N 035-00W, 66-00N 028-00W.
3. WESTERN ICEBERG LIMIT ALONG TRACKLINES:
   A. JOINING 49-07N 062-07W, 48-30N 061-45W,
      47-36N 059-13W.
   B. BETWEEN 50-13N 061-59W AND 49-20N 062-11W.
4. SEA ICE LIMIT ALONG TRACKLINES:
   A. JOINING 47-30N 052-40W, 48-45N 051-50W,
      50-55N 054-15W, 52-35N 052-15W, 54-00N 052-25W,
      56-30N 057-00W, 58-00N 058-00W, 61-00N 059-00W,
      63-00N 057-00W.
   B. BETWEEN 50-40N 059-20W AND 50-00N 057-45W.
   C. JOINING 62-22N 041-13W, 61-16N 041-19W,
      59-45N 043-08W, 59-30N 044-25W, 59-32N 045-22W,
      59-52N 045-52W, 60-01N 045-35W, 60-02N 044-50W.
5. NOTE THE SIGNIFICANT EXPANSION OF THE ICEBERG
   LIMIT SINCE 290001Z MAY BULLETIN DUE TO RECENT
   ICE SIGHTING.
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. CANCEL NAVAREA IV 439/17 AND 441/17.
8. CANCEL THIS MSG 300001Z MAY 17.

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

1433 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

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

Record snapshot 2026-09-29 10:13Z; 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.