Nav aids

An ODAS buoy is temporarily established in the South Atlantic off Brazil at 32-32.46S 052-06.03W until 31 Dec 2027; HYDROLANT 1946/25 canceled.

South Atlantic Ocean · HYDROLANT 809/26

What this record establishes

Cancelled notice · 2026-09-08 17:45Z

This notice disappeared from the issuing source's in-force list. No explicit recovery or all-clear is established by that removal.

Source and dates: NGA MSI in-force warnings (DailyMem*.txt). Issued 2026-04-23 01:21Z. First collected 2026-08-17 13:41Z; last seen in collection 2026-09-08 18:02Z. Collection dates record ingestion, not a new incident or a fresh field observation.
Location covered: South Atlantic Ocean. The parsed report position is -32.541, -52.100. 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: 2026-04-23 01:21Z
status: Cancelled notice
self-cancels: 2028-01-01 00:01Z
sea: South Atlantic Ocean
position: -32.541, -52.100
nearest port: Rio Grande · 29 nm
source: NGA MSI in-force warnings (DailyMem*.txt) · first seen 2026-08-17 13:41Z

Original warning text

SOUTH ATLANTIC.
BRAZIL.
1. ODAS BUOY TEMPORARILY ESTABLISHED IN
   32-32.46S 052-06.03W UNTIL 31 DEC 27.
2. CANCEL HYDROLANT 1946/25.
3. CANCEL THIS MSG 010001Z JAN 28.

Reading this warning

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.
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.

All warning terms →

Collected reports in this area · aids-to-navigation notices

130 within 180 nm since 1999 · 4 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.

Sarita light 32-37.81S 052-25.76W unlit until 07 mar 272026-09-09
Radiobeacon at chui light 33-44.6S 053-22.5W off air until 17 jan 272026-07-22
Odas buoy temporarily established in 32-14.29S 051-58.16W2026-06-27
Chui light 33-44.60S 053-22.50W unlit until 12 feb 252024-08-17
Estreito light 31-52.88S 051-46.35W unlit until 09 dec2024-06-12
RACON at conceicao light 31-43.83S 051-28.90W2024-04-04

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

Odas buoy temporarily established in 32-14.29S 051-58.16WNav aids · 19.4 nm

Worldwide in the collected sources

137 aids-to-navigation notices listed in force · see all

Record snapshot 2026-10-01 05:29Z; source collection times vary.

Nav aids

Lights extinguished, buoys off station, RACON/NAVTEX outages. All current aids-to-navigation notices →

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.