Revision 01 north american ice service (nais) iceberg bulletin 100001Z sep
Labrador Sea · NAVAREA IV 817/21
What this record establishes
Archived notice · 2021-09-11 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 092221Z SEP 21.. Issued 2021-09-09 22:24Z. 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
- North american ice service (nais) iceberg bulletin 100001Z sepcancelled by this notice
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.
- NAVAREA IV 683/212021-08-10 · Archived notice
- NAVAREA IV 688/212021-08-11 · Archived notice
- NAVAREA IV 692/212021-08-12 · Archived notice
- NAVAREA IV 698/212021-08-13 · Archived notice
- NAVAREA IV 706/212021-08-14 · Archived notice
- NAVAREA IV 711/212021-08-15 · Archived notice
- issued
- 2021-09-09 22:24Z
- status
- Archived notice
- self-cancels
- 2021-09-11 00:01Z
- authority
- NAIS 092221Z SEP 21.
- NAVAREA
- NAVAREA IV
- issued by
- NAIS
- sea
- Labrador Sea
- position
- 59.475, -48.646
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. REVISION 01 NORTH AMERICAN ICE SERVICE (NAIS) ICEBERG BULLETIN 100001Z SEP. 2. ICEBERG LIMIT ALONG TRACKLINE JOINING 48-06N 052-52W, 48-45N 052-00W, 55-45N 055-00W, 58-00N 057-00W. 3. ESTIMATED ICEBERG LIMIT ALONG TRACKLINE JOINING 58-00N 057-00W, 63-15N 060-45W, 63-50N 056-35W, 60-15N 052-20W, 57-30N 044-30W, 57-35N 042-15W, 62-35N 039-05W, 65-25N 029-20W. 4. WESTERN ICEBERG LIMIT ALONG TRACKLINE JOINING 51-58N 055-59W, 51-33N 055-38W. 5. RADAR TARGETS OUTSIDE ICEBERG LIMIT: MAY LIKELY BE ICE TO THE NEAREST CANADIAN COAST GUARD MARINE COMMUNICATIONS AND TRAFFIC SERVICE STATION OR USING INMARSAT CODE 42. 6. NOTE THE SIGNIFICANT EXPANSION OF THE ICEBERG LIMIT SINCE 090001Z SEP BULLETIN DUE TO RECENT RECONNAISSANCE. 7. MOST RECENT RECONNAISSANCE: EASTERN LIMIT ICEBERG FLIGHT 09 SEPT 21. 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 NAVAREA IV 815/21. 11. CANCEL THIS MSG 110001Z SEP 21.
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.
Collected reports in this area · iceberg & sea-ice bulletins
1364 within 180 nm since 2000 · 20 in the last 12 months · 0 listed in force now
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.
- North american ice service (nais) iceberg bulletin 240001Z sep2026-09-23
- North american ice service (nais) iceberg bulletin 230001Z sep2026-09-22
- North american ice service (nais) iceberg bulletin 170001Z sep2026-09-16
- North american ice service (nais) iceberg bulletin 160001Z sep2026-09-15
- North american ice service (nais) iceberg bulletin 140001Z sep2026-09-13
- North american ice service (nais) iceberg bulletin 110001Z sep2026-09-10
Month of issue in the collected archive
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 22:43Z; 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.