Depths reported: a. 3.1 meters in 00-21.99S 047-58.30W
South Atlantic Ocean · HYDROLANT 1171/23
What this record establishes
Archived notice · 2024-01-06 09:01Z
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) · NAVAREA V COASTAL 274/23 260316Z MAY 23.. Issued 2023-05-26 06:19Z. 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 -0.590, -48.121. 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
- Depths reported: a. 3.1 meters in 00-21.99S 047-58.30W b. 1.6 meters in 00-22.95S 047-59.21W c. 8.6 meters…cancelled by this notice
- Cancel HYDROLANT 1169/23, 1170/23, 1171/23 and this msglater cancellation 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.
- HYDROLANT 1164/232023-05-25 · Archived notice
- HYDROLANT 1165/232023-05-25 · Archived notice
- HYDROLANT 1166/232023-05-25 · Archived notice
- HYDROLANT 1169/232023-05-26 · Archived notice
- HYDROLANT 1170/232023-05-26 · Archived notice
- HYDROLANT 1171/23 · this notice2023-05-26 · Archived notice
Current notices and reporting history in the South Atlantic Ocean →
- issued
- 2023-05-26 06:19Z
- status
- Archived notice
- authority
- NAVAREA V COASTAL 274/23 260316Z MAY 23.
- NAVAREA
- NAVAREA V · named as the source of this relay
- issued by
- NAVAREA V COASTAL
- sea
- South Atlantic Ocean
- position
- -0.590, -48.121
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
WESTERN SOUTH ATLANTIC. BRAZIL. DNC 01. 1. DEPTHS REPORTED: A. 3.1 METERS IN 00-21.99S 047-58.30W. B. 1.6 METERS IN 00-22.95S 047-59.21W. C. 8.6 METERS IN 00-24.51S 048-04.20W. D. 5.3 METERS IN 00-30.80S 047-53.64W. E. 1.9 METERS IN 00-33.43S 047-55.20W. F. 6.5 METERS IN 00-53.64S 048-30.07W. G. 7.0 METERS IN 01-00.27S 048-30.41W. 2. CANCEL HYDROLANT 1165/23.
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.
- Shoal / reported depth
- Water shallower than the chart shows — a newly found shoal, a reported depth, or less water than charted.
- 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.
- Cancellation reference
- A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
- HYDROLANT
- The U.S. long-range warning series for Atlantic waters outside NAVAREA IV, including the eastern Atlantic, the Mediterranean and adjoining seas.
Collected reports in this area · wrecks & obstructions
20 within 180 nm since 2003 · 1 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.
- Dangerous wreck in 00-24.48N 047-50.68W2026-02-10
- One person overboard from F/V, sank in 01-03.00S 046-01.00W at 270700Z nov2023-11-29
- Depths reported: a. 8.8 meters in 01-02.59N 049-41.78W2023-10-27
- Depths reported: a. 7.2 meters in 01-15.81N 049-32.17W2023-10-19
- Depths reported: a. 9.7 meters in 01-06.62N 049-41.33W2023-10-19
- Depths reported: a. 8.8 meters in 01-25.61N 049-11.14W2023-10-18
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
38 wrecks & obstructions listed in force · see all
Record snapshot 2026-10-01 19:47Z; source collection times vary.
Wrecks
Dangerous wrecks, shoals and submerged obstructions. All current wrecks & obstructions →
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.