Seismic survey 221831Z dec to 281830Z feb 12 by M/V arctemis arctic towing four 8500 meter long cables in…
Laccadive Sea · HYDROPAC 3544/11
What this record establishes
Archived notice · 2012-01-07 11:33Z
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 704/11 191001Z DEC 11.. Issued 2011-12-19 12:11Z. 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
- Laccadive Sea. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.
Current notices and reporting history in the Laccadive Sea →
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2011-12-22 18:31Z | 2012-02-28 18:30Z | — | 1631 h 59 |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2011-12-19 12:11Z
- status
- Archived notice
- self-cancels
- 2012-02-28 19:30Z
- authority
- NAVAREA VIII 704/11 191001Z DEC 11.
- NAVAREA
- NAVAREA VIII · named as the source of this relay
- sea
- Laccadive Sea
- position
- 8.893, 78.992
- vessel
- M/V ARCTEMIS ARCTIC
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
INDIA-SOUTHWEST COAST. 1. SEISMIC SURVEY 221831Z DEC TO 281830Z FEB 12 BY M/V ARCTEMIS ARCTIC TOWING FOUR 8500 METER LONG CABLES IN AREA BOUND BY 08-38.22N 078-34.32E, 08-38.39N 079-10.00E, 09-04.28N 079-27.38E, 09-09.14N 079-18.04E, 09-09.43N 078-52.43E, 09-04.14N 078-46.20E, 08-47.55N 078-34.28E. SIX MILE BERTH REQUESTED. 2. CANCEL THIS MSG 281930Z FEB 12.
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.
- 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
24 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.
- Seismic survey in progress until 10 and 13 thru 18 mar by M/V samdura ratnakar towing four mile long cable…2015-02-18
- Seismic survey in progress until 30 nov by M/V brahmputra dolphin, M/V kohinoor-i and M/V sunrise-ii towing…2014-09-03
- Seismic survey in progress until 04 sep by M/V brahmputra dolphin, M/V kohinoor-i and M/V sunrise-ii towing…2014-08-18
- Seismic survey in progress until 29 may by M/V bos angler towing four 6500 meter long cables in area bound…2011-04-19
- Seismic survey in progress until 16 apr by M/V bos angler towing four 6500 meter long cables in area bound…2011-03-17
- Seismic survey in progress until 20 mar by M/V geco topaz towing six five mile long cables in area bound by…2009-02-17
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 2026-10-02 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.