Nga chart 24170 (14TH ed)
South Atlantic Ocean · HYDROLANT 122/11
What this record establishes
Archived notice · 2011-01-29 10:19Z
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 E 46/11 200048Z JAN 11.. Issued 2011-01-20 02:36Z. 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 -20.927, -40.755. 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
- 2011-01-20 02:36Z
- status
- Archived notice
- authority
- NAVAREA V E 46/11 200048Z JAN 11.
- NAVAREA
- NAVAREA V · named as the source of this relay
- issued by
- NAVAREA V E
- sea
- South Atlantic Ocean
- position
- -20.927, -40.755
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
BRAZIL-SOUTHEAST COAST. NGA CHART 24170 (14TH ED). ILHA DO FRANCES LIGHT 20-55.6S 040-45.3W UNLIT.
Reading this warning
- Chart reference
- The number of the nautical chart on which the reported position lies.
- 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.
- Unlit / extinguished
- A light, buoy or structure that is not showing its charted light.
Collected reports in this area · aids-to-navigation notices
295 within 180 nm since 1998 · 6 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.
- RACON at sao tome light 22-02.52S 041-03.17W inoperative until 24 mar2026-09-26
- Barra de itabapoana light 21-18.82S 040-57.95W unlit until 01 mar 272026-09-03
- Odas buoy temporarily established until 21 aug 27 in 21-34.20S 040-43.62W2026-08-21
- Odas buoy temporarily established until 13 apr 27 in 21-34.20S 040-43.62W2026-04-14
- RACON at cabo sao tome light 22-02.52S 041-03.17W off air until 28 sep2026-04-02
- Barra de itabapoana light 21-18.80S 040-57.90W unlit until 08 sep 262026-03-13
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
- Underwater operations 0800Z to 1800Z daily 26 sep thru 10 oct by M/V comando b in 20-23.78S 040-09.43WSurveys · 46.3 nm
- Foul ground until 06 dec 27 in area bound by 19-53.87S 039-59.68W, 19-54.15S 039-59.27W, 19-53.08S…Wrecks · 75.8 nm
- Underwater operations 0800Z to 1800Z daily 26 sep thru 10 oct by M/V comando b in 19-51.63S 039-56.90WSurveys · 78.5 nm
- Underwater operations 1000Z to 2000Z daily until 02 nov 26 by M/V fugro vaquita in: a. 22-26.32S 040-25.47WSurveys · 93.1 nm
- Underwater operations in progress until 110300Z oct by M/V sistac vitoria in 22-32.81S 040-04.04WSurveys · 104.6 nm
Worldwide in the collected sources
134 aids-to-navigation notices listed in force · see all
Record snapshot 2026-10-03 16:16Z; 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.