Seismic survey in progress until further notice by M/V ramform valiant towing 12 four mile long cables in…
North Sea · HYDROLANT 1960/13
What this record establishes
Archived notice · 2013-08-17 11:03Z
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 I 213/13 100621Z AUG 13.. Issued 2013-08-10 07:00Z. 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
- North 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
- issued
- 2013-08-10 07:00Z
- status
- Archived notice
- authority
- NAVAREA I 213/13 100621Z AUG 13.
- NAVAREA
- NAVAREA I · named as the source of this relay
- sea
- North Sea
- position
- 58.633, -0.656
- vessel
- M/V RAMFORM VALIANT · 344 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
NORTH SEA. 1. SEISMIC SURVEY IN PROGRESS UNTIL FURTHER NOTICE BY M/V RAMFORM VALIANT TOWING 12 FOUR MILE LONG CABLES IN AREA BOUND BY 58-08N 001-23W, 58-28N 001-28W, 59-08N 000-02E, 58-47N 000-09E. WIDE BERTH REQUESTED. 2. CANCEL HYDROLANT 1859/13.
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.
- Until further notice
- The operation or danger has no scheduled end; the warning stays in force until a later message cancels it.
- 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.
- HYDROLANT
- The U.S. long-range warning series for Atlantic waters outside NAVAREA IV, including the eastern Atlantic, the Mediterranean and adjoining seas.
Collected reports in this area · cable & pipeline work
244 within 180 nm since 1998 · 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.
- Cable operations in progress until further notice by cableship sovereign in 59-49.00N 002-58.40W2026-08-27
- Cable operations in progress until further notice by cableship cable vigilance in vicinity 60-35.40N…2023-06-01
- Cable operations in progress until further notice by cableship cable vigilance in vicinity 60-26.60N…2023-05-28
- Seismic survey in progress by M/V kommandor towing 1200 meter long cable in area bound by 57-05.10N…2022-11-04
- Cable operations in progress until further notice by cableship cable vigilance in vicinity 59-56.30N…2022-10-26
- Cable operations in progress until further notice by cableship cable vigilance in vicinity 60-26.70N…2022-10-19
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
23 cable & pipeline work listed in force · see all
Record snapshot 2026-10-04 03:27Z; 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.