Seismic survey 20 mar thru 30 apr by M/V geo hindsagar towing five mile long cable in area bound by…
Indian Ocean · HYDROPAC 958/15
What this record establishes
Archived notice · 2015-04-23 11:18Z
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 208/15 181001Z MAR 15.. Issued 2015-03-19 09:10Z. 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
- Indian Ocean. 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
- Seismic survey 01 thru 25 mar by M/V geo hindsagar towing five mile long cable in area between 01-40N 00-40N…cancelled by this notice
- Cancel HYDROPAC 958/15 and this msglater cancellation notice
- issued
- 2015-03-19 09:10Z
- status
- Archived notice
- authority
- NAVAREA VIII 208/15 181001Z MAR 15.
- NAVAREA
- NAVAREA VIII · named as the source of this relay
- sea
- Indian Ocean
- position
- 5.210, 86.273
- vessel
- M/V GEO HINDSAGAR · 29 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
BAY OF BENGAL. NORTHERN INDIAN OCEAN. DNC 03. 1. SEISMIC SURVEY 20 MAR THRU 30 APR BY M/V GEO HINDSAGAR TOWING FIVE MILE LONG CABLE IN AREA BOUND BY 03-12.07N 083-40.64E, 05-51.92N 085-09.23E, 06-45.37N 088-13.89E, 05-29.13N 088-36.49E. EIGHT MILE BERTH REQUESTED. 2. CANCEL HYDROPAC 675/15. 3. CANCEL THIS MSG 01 MAY 15.
Reading this warning
- DNC (Digital Nautical Chart)
- A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
- 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.
- Cancellation reference
- A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
- HYDROPAC
- The U.S. long-range warning series for the Pacific outside NAVAREA XII and for the Indian Ocean, Persian Gulf 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 · cable & pipeline work
3 within 180 nm since 2001 · 1 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
24 cable & pipeline work listed in force · see all
Record snapshot 2026-10-01 06:06Z; 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.