Icebergs reported in: a. D21B, 57-50S 026-35W
South Atlantic Ocean · HYDROLANT 1173/21
What this record establishes
Archived notice · 2021-04-29 15:30Z
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) · NAVAREA VI 161/21 281447Z APR 21.. Issued 2021-04-28 15:30Z. 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
- South Atlantic Ocean. The parsed report position is -52.691, -31.570. It is a position in the source message, not a live location. 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.
- HYDROLANT 832/212021-03-25 · Archived notice
- HYDROLANT 839/212021-03-26 · Archived notice
- HYDROLANT 845/212021-03-27 · Archived notice
- HYDROLANT 850/212021-03-28 · Archived notice
- HYDROLANT 857/212021-03-29 · Archived notice
- HYDROLANT 873/212021-03-30 · Archived notice
Current notices and reporting history in the South Atlantic Ocean →
- issued
- 2021-04-28 15:30Z
- status
- Archived notice
- self-cancels
- 2021-04-29 15:30Z
- authority
- NAVAREA VI 161/21 281447Z APR 21.
- NAVAREA
- NAVAREA VI · named as the source of this relay
- sea
- South Atlantic Ocean
- position
- -52.691, -31.570
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
WESTERN SOUTH ATLANTIC. SCOTIA SEA. ANTARCTICA. DNC 01. 1. ICEBERGS REPORTED IN: A. D21B, 57-50S 026-35W. B. 51-54S 032-48W. C. 52-05S 031-25W. D. 52-01S 030-39W. E. 52-37S 033-03W. F. 52-03S 031-56W. G. 51-58S 032-13W. H. 52-05S 032-45W. I. 51-40S 032-44W. 2. CANCEL THIS MSG 291530Z APR 21.
Reading this warning
- DNC (Digital Nautical Chart)
- A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
- Icebergs and ice limits
- Icebergs, smaller pieces of glacier ice and the published limit of known ice.
- 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.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
- 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.
Collected reports in this area · iceberg & sea-ice bulletins
297 within 180 nm since 2000 · 0 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.
- Icebergs reported in: a. A23A, 59-14.00S 045-04.00W2024-04-16
- Icebergs reported in: a. A23A, 59-15.00S 045-04.00W2024-04-15
- Icebergs reported in: a. A23A, 59-05.00S 045-09.00W2024-04-11
- Icebergs reported in: a. A23A, 62-32.00S 052-30.00W2023-11-28
- South georgia and the south sandwich islands2023-11-22
- South georgia and the south sandwich islands2023-11-21
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 21:58Z; 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.