Seismic survey 210001Z apr to 150001Z may by M/V zephyr - I towing 6000 meter long cable in area bound by…
Arafura Sea · HYDROPAC 682/07
What this record establishes
Archived notice · 2007-05-15 01:01Z
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 XI 154/07 16 APR 07.. Issued 2007-04-16 10:39Z. 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
- Arafura 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.
Related notices and cancellation links
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2007-04-21 00:01Z | 2007-05-15 00:01Z | — | 576 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2007-04-16 10:39Z
- status
- Archived notice
- self-cancels
- 2007-05-15 01:01Z
- authority
- NAVAREA XI 154/07 16 APR 07.
- NAVAREA
- NAVAREA XI · named as the source of this relay
- sea
- Arafura Sea
- position
- -4.145, 133.720
- vessel
- M/V ZEPHYR · 9 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. SEISMIC SURVEY 210001Z APR TO 150001Z MAY BY M/V ZEPHYR - I TOWING 6000 METER LONG CABLE IN AREA BOUND BY 03-38.9S 133-37.7E, 04-13.9S 134-32.3E, 04-34.0S 133-33.4E, 04-11.8S 133-01.3E. WIDE BERTH REQUESTED. 2. CANCEL HYDROPAC 617/07. 3. CANCEL THIS MSG 150101Z MAY.
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.
- 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
11 within 180 nm since 2004 · 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 25 may 16 by M/V viking vision in areas bound by: a. 04-34S 133-48E, 04-55S…2015-12-27
- Seismic survey in progress until 25 mar 16 by M/V viking vision in areas bound by: a. 04-34S 133-48E, 04-55S…2015-12-25
- Seismic survey in progress until 31 mar by M/V western spirit towing eight 8000 meter long cables in area…2013-03-08
- Seismic survey 12 feb thru 26 mar by M/V nordic energy towing 10000 meter long cable in area bound by 04-10S…2013-02-11
- Seismic survey 18 jul thru 01 aug by M/V nordic energy towing 8000 meter long cable in area bound by 05-50S…2012-07-17
- Seismic survey 26 dec thru 09 feb by M/V beaufort explorer towing 9500 meter long cable in area bound by…2010-12-24
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 23:31Z; 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.