Icebergs

North american ice service (nais) iceberg bulletin 310001Z jul

Davis Strait · NAVAREA IV 674/20

What this record establishes

Archived notice · 2020-08-01 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 301857Z JUL 20.. Issued 2020-07-30 21:06Z. 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
Davis Strait. 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 668/202020-07-29 · Archived notice
  2. NAVAREA IV 674/20 · this notice2020-07-30 · Archived notice
  3. NAVAREA IV 680/202020-07-31 · Archived notice
  4. NAVAREA IV 686/202020-08-01 · Archived notice
  5. NAVAREA IV 695/202020-08-02 · Archived notice
  6. NAVAREA IV 700/202020-08-03 · Archived notice
Compare all 11 notices, changes and original texts →

Current notices and reporting history in the Davis Strait →

issued
2020-07-30 21:06Z
status
Archived notice
self-cancels
2020-08-01 00:01Z
authority
NAIS 301857Z JUL 20.
NAVAREA
NAVAREA IV
issued by
NAIS
sea
Davis Strait
position
62.715, -55.309
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 310001Z JUL.
2. ICEBERG LIMIT ALONG TRACKLINE JOINING
   48-30N 053-06W, 50-20N 047-45W,
   52-10N 047-40W, 54-05N 048-45W.
3. ESTIMATED ICEBERG LIMIT ALONG TRACKLINE
   JOINING
   54-05N 048-45W, 61-05N 058-45W,
   61-15N 058-30W, 57-30N 047-00W,
   58-30N 042-30W, 63-00N 038-30W,
   65-10N 028-00W.
4. WESTERN ICEBERG LIMIT ALONG TRACKLINE JOINING
   51-06N 058-50W, 49-57N 057-42W.
5. SEA ICE LIMIT ALONG TRACKLINE JOINING
   61-55N 066-30W, 61-10N 065-00W,
   61-30N 063-30W, 63-55N 059-15W,
   65-10N 057-50W, 67-40N 059-10W,
   72-00N 068-50W, 73-55N 078-45W,
   75-10N 077-40W, 75-20N 073-35W.
6. MOST RECENT RECONNAISSANCE:
   INTERIOR ICEBERG FLIGHT 26 JUL 20.
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 010001Z AUG 20.

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

113 within 180 nm since 2012 · 0 in the last 12 months · 0 listed in force now

12
15
20
23

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

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

Record snapshot 2026-09-24 22:42Z; 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.