North american ice service (nais) iceberg bulletin 170001Z aug
Labrador Sea · NAVAREA IV 816/22
What this record establishes
Archived notice · 2022-08-18 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 0/22 161901Z AUG 22.. Issued 2022-08-16 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
- Cable operations 280600Z jun to 162359Z aug by M/V rebecca along tracklines joining: a. 44-27.76N…cancelled 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 472/222022-05-17 · Archived notice
- NAVAREA IV 474/222022-05-18 · Archived notice
- NAVAREA IV 480/222022-05-19 · Archived notice
- NAVAREA IV 489/222022-05-20 · Archived notice
- NAVAREA IV 493/222022-05-21 · Archived notice
- NAVAREA IV 494/222022-05-22 · Archived notice
- issued
- 2022-08-16 19:09Z
- status
- Archived notice
- self-cancels
- 2022-08-18 00:01Z
- authority
- NAIS 0/22 161901Z AUG 22.
- NAVAREA
- NAVAREA IV
- issued by
- NAIS
- sea
- Labrador Sea
- position
- 58.980, -49.387
- 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 170001Z AUG. 2. ICEBERG LIMIT ALONG TRACKLINE JOINING 49-56N 055-31W, 51-25N 051-45W, 53-25N 048-45W, 55-55N 050-45W, 57-00N 053-30W. 3. ESTIMATED ICEBERG LIMIT ALONG TRACKLINE JOINING 57-00N 053-30W, 58-50N 055-50W, 59-55N 052-40W, 58-15N 044-50W, 58-10N 042-25W, 59-05N 039-55W, 62-25N 038-05W, 65-05N 030-30W. 4. WESTERN ICEBERG LIMIT ALONG TRACKLINE JOINING 51-10N 058-42W, 50-34N 057-20W. 5. SEA ICE LIMIT ALONG TRACKLINE JOINING 62-05N 066-00W, 62-06N 063-32W, 63-42N 061-44W, 64-47N 061-46W, 65-23N 058-10W, 65-49N 057-41W. 6. MOST RECENT RECONNAISSANCE: SOUTHERN LIMIT ICEBERG FLIGHT 15 AUG 22. 7. NOTE THE SIGNIFICANT REDUCTION OF THE ICEBERG LIMIT SINCE 160001Z AUG BULLETIN DUE TO RECENT RECONNAISSANCE. 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 604/22. 11. CANCEL THIS MSG 180001Z AUG 22.
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
1651 within 180 nm since 2002 · 25 in the last 12 months · 1 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 010001Z oct2026-09-30
- North american ice service (nais) iceberg bulletin 300001Z sep2026-09-29
- North american ice service (nais) iceberg bulletin 290001Z sep2026-09-28
- North american ice service (nais) iceberg bulletin 280001Z sep2026-09-27
- North american ice service (nais) iceberg bulletin 250001Z sep2026-09-24
- North american ice service (nais) iceberg bulletin 240001Z sep2026-09-23
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
- North american ice service (nais) iceberg bulletin 250001Z sepIcebergs · 97.2 nm
Worldwide in the collected sources
6 iceberg & sea-ice bulletins listed in force · see all
Record snapshot 2026-10-02 09:24Z; 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.