Survey operations in progress until further notice by M/V akademik lazarev towing 13000 meter long cable in…
North Sea · HYDROLANT 1542/21
What this record establishes
Archived notice · 2021-06-12 15:58Z
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 I 95/21 090010Z JUN 21.. Issued 2021-06-09 01:29Z. 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 the reported line or operation extent; it is not a vessel track. Check the original wording for limits and qualifications.
Related notices and cancellation links
- issued
- 2021-06-09 01:29Z
- status
- Archived notice
- authority
- NAVAREA I 95/21 090010Z JUN 21.
- NAVAREA
- NAVAREA I · named as the source of this relay
- sea
- North Sea
- position
- 59.135, 1.210
- vessel
- M/V AKADEMIK LAZAREV · 47 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
NORTH SEA. NORWAY. SHETLAND ISLANDS. DNC 20, DNC 21. 1. SURVEY OPERATIONS IN PROGRESS UNTIL FURTHER NOTICE BY M/V AKADEMIK LAZAREV TOWING 13000 METER LONG CABLE IN VICINITY OF TRACKLINE JOINING 59-08N 002-03W, 59-06N 002-25E, 59-15N 004-28E. NINE MILE BERTH REQUESTED. 2. CANCEL HYDROLANT 1501/21.
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.
- Survey operations
- A research or survey vessel is mapping the seabed or water column, often while towing equipment.
- 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.
- Track line joining
- Introduces a route through a series of positions — a cable route, a tow's track or a survey line.
- 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 · survey operations
164 within 180 nm since 1999 · 6 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.
- Survey operations in progress until further notice by M/V ramform atlas towing 12 7050 meter long cables in…2026-09-06
- Survey operations in progress until further notice by M/V ramform atlas towing 15 7050 meter long cables in…2026-09-02
- Survey operations in progress until further notice by M/V amazon conqueror towing eight one mile long cables…2026-08-15
- Survey operations in progress until further notice by M/V ramform hyperion towing ten 2740 meter long cables2026-08-03
- Survey operations in progress until further notice by M/V amazon conqueror towing eight 1609 meter long…2026-07-31
- Survey operations in progress until further notice by M/V ramform atlas towing 17 3600 meter long cables in…2026-07-03
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
56 survey operations listed in force · see all
Record snapshot 2026-10-03 22:47Z; source collection times vary.
Surveys
Hydrographic and scientific survey vessels, often towing long arrays. All current survey operations →
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.