A reported depth of 18.3 meters at 20-35.71S 034-46.07W in the Western South Atlantic; previous warning cancelled.
South Atlantic Ocean · HYDROLANT 915/25
What this record establishes
Listed in force
The latest collected record lists this warning as active. This is the status of the notice, not a live observation of conditions at the location.
- Source and dates
- NGA MSI in-force warnings (DailyMem*.txt). Issued 2025-05-31 02:02Z. First collected 2026-08-17 13:41Z; last seen in collection 2026-10-01 05:17Z. Collection dates record ingestion, not a new incident or a fresh field observation.
- Location covered
- South Atlantic Ocean. The parsed report position is -20.595, -34.768. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.
Current notices and reporting history in the South Atlantic Ocean →
- issued
- 2025-05-31 02:02Z
- status
- Listed in force
- sea
- South Atlantic Ocean
- position
- -20.595, -34.768
- nearest port
- Vitoria · 314 nm
- source
- NGA MSI in-force warnings (DailyMem*.txt) · first seen 2026-08-17 13:41Z
Original warning text
WESTERN SOUTH ATLANTIC. DNC 01. 1. 18.3 METER DEPTH REPORTED IN 20-35.71S 034-46.07W. 2. CANCEL HYDROLANT 580/25.
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.
Conditions at the position · now
loading…
MET Norway · NOAA WaveWatch III · HYCOM · GEBCO 2020 · model data at the centroid, not an observation
Collected reports in this area · wrecks & obstructions
1 within 180 nm since 2025 · 0 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.
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
40 wrecks & obstructions listed in force · see all
Record snapshot 2026-10-01 05:19Z; 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.