Nga chart 24020 (47TH ed)
South Atlantic Ocean · HYDROLANT 2427/10
What this record establishes
Archived notice · 2010-12-17 23:50Z
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 N 1593/10 151220Z DEC 10 - WZ 1475/10 151748Z DEC 10.. Issued 2010-12-15 19:34Z. 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 -2.270, -43.623. 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
- Underwater operations in progress until further notice by cableship wave sentinel vicinity 53-54.4N 004-24.5Wcancelled by this notice
- Cancel HYDROLANT 2427/10 and this msglater cancellation notice
Current notices and reporting history in the South Atlantic Ocean →
- issued
- 2010-12-15 19:34Z
- status
- Archived notice
- authority
- NAVAREA V N 1593/10 151220Z DEC 10 - WZ 1475/10 151748Z DEC 10.
- NAVAREA
- NAVAREA V · named as the source of this relay
- issued by
- NAVAREA V N
- sea
- South Atlantic Ocean
- position
- -2.270, -43.623
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
BRAZIL-NORTH COAST. NGA CHART 24020 (47TH ED). 1. ILHA DE SANTANA LIGHT 02-16.2S 043-37.4W UNLIT. 2. CANCEL HYDROLANT 2382/10(36), OPERATIONS COMPLETED.
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.
- 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 · aids-to-navigation notices
179 within 180 nm since 1998 · 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.
- Santana light 02-16.23S 043-37.43W unlit until 03 dec2024-06-06
- Ilha maiau light 01-16.90S 044-54.20W unlit until 27 oct2024-05-01
- Ponta do trapia light 02-51.77S 040-51.63W range reduced to ten miles2024-04-04
- Radio beacon at ponta de sao marcos in 02-29.29S 044-18.12W off air until 29 sep2024-04-02
- Ponta de sao marcos light in 02-29.31S 044-18.12W unlit until 29 sep2024-04-02
- Ilha do apeu light 00-54.62S 046-11.34W damaged and unlit until 27 feb 242023-09-01
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
Worldwide in the collected sources
137 aids-to-navigation notices listed in force · see all
Record snapshot 2026-10-01 15:56Z; 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.