Survey operations in progress until 020300Z jun by M/V sonne along trackline between 05-23.8S 035-19.8W and…
South Atlantic Ocean · HYDROLANT 1041/03
What this record establishes
Archived notice · 2003-05-29 06:40Z
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 660, 661, 662/03 281229Z MAY 03. Issued 2003-05-28 14:00Z. 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 map shows the reported line or operation extent; it is not a vessel track. Check the original wording for limits and qualifications.
Related notices and cancellation links
- AM-1 lightfloat 01-34.1N 049-01.4W temporarily removedcancelled by this notice
- Dgps station at ponta de calcanhar light 05-09.7S 035-29.1W inoperativecancelled by this notice
- Survey operations in progress until 020300Z jun by M/V sonne in area between 05-23.8S 05-16.6N and 035-27.2W…later cancellation notice
Current notices and reporting history in the South Atlantic Ocean →
- issued
- 2003-05-28 14:00Z
- status
- Archived notice
- self-cancels
- 2003-06-02 04:00Z
- authority
- NAVAREA V 660, 661, 662/03 281229Z MAY 03
- NAVAREA
- NAVAREA V · named as the source of this relay
- sea
- South Atlantic Ocean
- position
- -0.060, -35.392
- vessel
- M/V SONNE · 40 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. SURVEY OPERATIONS IN PROGRESS UNTIL 020300Z JUN BY M/V SONNE ALONG TRACKLINE BETWEEN 05-23.8S 035-19.8W AND 05-16.6N 035-27.2W. 2. CANCEL HYDROLANT 2808/02 AND 988/03. 3. CANCEL THIS MSG 020400Z JUN.
Reading this warning
- Survey operations
- A research or survey vessel is mapping the seabed or water column, often while towing equipment.
- 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.
- Track line joining
- Introduces a route through a series of positions — a cable route, a tow's track or a survey line.
- 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.
Collected reports in this area · survey operations
6 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.
- Underwater operations in progress until 03 jul by M/V cs record and M/V saga badejo in area bound by 01-53S…2018-03-15
- Survey operations in progress until 201300Z may by M/V meteor along trackline joining 08-00N 035-00W, 00-45S…2002-05-09
- Oceanographic operations in progress until 04 dec by M/V almirante camara in area bound by 04-40.6N…2000-12-01
- Oceanographic survey in progress until 16 nov by M/V antares in area bound by 01-10S 039-25W, 02-05S…2000-11-06
- Oceanographic buoy, fl, established in 00-00.7S 035-02.8W1998-01-26
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
56 survey operations listed in force · see all
Record snapshot 2026-10-03 02:35Z; source collection times vary.
Surveys
Hydrographic and scientific survey vessels, often towing long arrays. All current survey operations →
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.