Seismic survey in progress until 10 apr by M/V ramform explorer towing eight 8600 meter long cables in area…
Bay of Bengal · HYDROPAC 321/09
What this record establishes
Archived notice · 2009-02-16 14:58Z
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 VIII 77/09 101002Z FEB 09.. Issued 2009-02-11 00:59Z. 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
- Bay of Bengal. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.
Related notices and cancellation links
- Cancel HYDROPAC 313/09, 321/09, and 333/09later cancellation notice
Current notices and reporting history in the Bay of Bengal →
- issued
- 2009-02-11 00:59Z
- status
- Archived notice
- authority
- NAVAREA VIII 77/09 101002Z FEB 09.
- NAVAREA
- NAVAREA VIII · named as the source of this relay
- sea
- Bay of Bengal
- position
- 13.842, 80.901
- vessel
- M/V RAMFORM EXPLORER · 297 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. SEISMIC SURVEY IN PROGRESS UNTIL 10 APR BY M/V RAMFORM EXPLORER TOWING EIGHT 8600 METER LONG CABLES IN AREA BOUND BY 14-08.57N 080-38.52E, 14-15.17N 080-55.12E, 13-32.88N 081-10.00E, 13-26.30N 080-52.29E. FIVE MILE BERTH REQUESTED. 2. CANCEL THIS MSG 11 APR.
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.
- 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.
- Area bound by
- Introduces a list of positions that are the corners of an area — the polygon the warning applies to.
- 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.
Collected reports in this area · cable & pipeline work
120 within 180 nm since 2001 · 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.
- Cable operations 07 feb thru 04 mar by cableship responder along trackline joining 13-01.46N 080-16.72E,…2025-02-06
- Cable operations in progress until 311830Z may by cableship maram along trackline joining 13-01.03N…2024-05-03
- Seismic survey operations in progress until 011830Z may by M/V sw empress in area bound by 11-09.00N…2024-02-09
- Cable operations in progress until 20 jan by cableship miclyn enterprise in areas bound by: a. 12-36.13N…2024-01-10
- Cable operations in progress until 14 oct by cableship miclyn enterprise in areas bound by: a. 12-36.07N…2023-10-12
- Cable operations in progress until 17 jun by cableship normand clipper along trackline joining 12-43.30N…2023-06-04
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
- Buoy established in 14-05.21N 080-28.50ENav aids · 28.8 nm
- Hazardous operations 290830Z to 290930Z sep in area bound by 13-07.02N 080-18.01E, 13-14.90N 080-25.98E,…Exercises · 49.2 nm
Worldwide in the collected sources
24 cable & pipeline work listed in force · see all
Record snapshot 2026-10-02 08:49Z; 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.