Cable ops
Seismic survey in progress until 190159Z dec by M/V nps symphony towing ten three mile long cables in area…
Brazil-southeast Coast · HYDROLANT 1909/11
What this record establishes
Archived notice · 2011-11-19 10:25Z
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 574/11 15 NOV 11.. Issued 2011-11-15 12:09Z. 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
- Brazil-southeast Coast. No usable coordinates were parsed; a location-based nearby search is unavailable. Check the original wording for limits and qualifications.
- issued
- 2011-11-15 12:09Z
- status
- Archived notice
- self-cancels
- 2011-12-19 02:59Z
- authority
- NAVAREA V 574/11 15 NOV 11.
- NAVAREA
- NAVAREA V · named as the source of this relay
- vessel
- M/V NPS SYMPHONY · 23 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
BRAZIL-SOUTHEAST COAST. 1. SEISMIC SURVEY IN PROGRESS UNTIL 190159Z DEC BY M/V NPS SYMPHONY TOWING TEN THREE MILE LONG CABLES IN AREA BETWEEN 23-42S 25-36S AND 041-00W 042-23W. SIX MILE BERTH REQUESTED. 2. CANCEL THIS MSG 190259Z DEC.
Reading this warning
- Seismic survey
- A survey that maps the rock beneath the seabed with sound pulses from air guns, recorded on streamers kilometres long.
- 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.
- Towed array / streamer
- Equipment towed a long way behind a vessel — sonar, a hydrophone cable, a sampling sled — invisible at the surface.
- Tow / towing
- A vessel towing another vessel, a barge or a structure — slow, hard to manoeuvre, and with a long line between.
- 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.
- Wide berth requested
- Keep well clear — or, when a distance is given ("TWO MILE BERTH REQUESTED"), at least that far away.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
Nearby notices listed in force · within 120 nm
No parsed position is available for this comparison.
Worldwide in the collected sources
24 cable & pipeline work listed in force · see all
Record snapshot 2026-10-02 10:10Z; source collection times vary.
Cable ops
Cable laying, pipeline and seismic operations. All current cable & pipeline work →
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.