7000 meter hydrophone streamer marked by yellow buoy adrift in 37-05.78S 050-53.80W
South Atlantic Ocean · HYDROLANT 891/02
What this record establishes
Archived notice · 2002-04-18 04:52Z
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 VI 134/02 170218Z APR 02. Issued 2002-04-17 03:53Z. 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 -37.096, -50.897. 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
- Cancel HYDROLANT 847/02, 848/02, 849/02, 867/02, 891/02 and this msglater cancellation notice
Current notices and reporting history in the South Atlantic Ocean →
- issued
- 2002-04-17 03:53Z
- status
- Archived notice
- authority
- NAVAREA VI 134/02 170218Z APR 02
- NAVAREA
- NAVAREA VI · named as the source of this relay
- sea
- South Atlantic Ocean
- position
- -37.096, -50.897
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. 7000 METER HYDROPHONE STREAMER MARKED BY YELLOW BUOY ADRIFT IN 37-05.78S 050-53.80W. 2. CANCEL THIS MSG 24 APR.
Reading this warning
- Towed array / streamer
- Equipment towed a long way behind a vessel — sonar, a hydrophone cable, a sampling sled — invisible at the surface.
- Off station / missing buoy
- A buoy that is not in its charted position — dragged, damaged, missing or removed.
- Adrift
- Loose and moving with wind and current — a vessel, container, buoy, log or anything else no longer secured.
- 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.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
Collected reports in this area · drifting objects
1 within 180 nm since 2002 · 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.
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
2 drifting objects listed in force · see all
Record snapshot 2026-10-02 20:50Z; source collection times vary.
Debris
Logs, buoys, mooring gear and other objects adrift. All current drifting objects →
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.