Underwater operations 20 aug until further notice by cableship it intrepid in area bound by 67-43.00N…
Chukchi Sea · HYDROARC 164/23
What this record establishes
Archived notice · 2023-09-18 23:25Z
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) · IT INTREPID 0/23 050152Z AUG 23.. Issued 2023-08-15 09:36Z. 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
- Chukchi 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
- Cancel HYDROARC 164/23 and this msg, operations completedlater cancellation notice
- issued
- 2023-08-15 09:36Z
- status
- Archived notice
- authority
- IT INTREPID 0/23 050152Z AUG 23.
- issued by
- IT INTREPID
- sea
- Chukchi Sea
- position
- 66.655, -163.114
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
CHUKCHI SEA. ALASKA. DNC 27. UNDERWATER OPERATIONS 20 AUG UNTIL FURTHER NOTICE BY CABLESHIP IT INTREPID IN AREA BOUND BY 67-43.00N 164-34.00W, 67-04.00N 163-46.00W, 66-53.00N 162-38.00W, 66-13.00N 162-09.00W, 66-11.00N 163-12.00W. TWO MILE BERTH REQUESTED.
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.
- Underwater operations
- Divers or remotely operated vehicles are working below a vessel that cannot easily move out of the way.
- Until further notice
- The operation or danger has no scheduled end; the warning stays in force until a later message cancels it.
- Cable operations
- A ship is laying, burying or repairing a submarine cable, usually along a stated route.
- 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.
Collected reports in this area · cable & pipeline work
11 within 180 nm since 2016 · 4 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 14 sep by cableship it integrity along trackline joining 66-07.20N…2026-09-09
- Cable operations 07 thru 10 sep by cableship it integrity along trackline joining 66-49.16N 162-59.66W,…2026-09-05
- Cable operations in progress by vessel it integrity along trackline joining 66-06.56N 162-40.36W, 66-48.93N…2026-08-23
- Cable operations 22 aug thru 02 sep by cableship it integrity in: a. 66-06.56N 162-40.36W2026-08-20
- Underwater operations 20 aug until further notice by cableship it intrepid in area bound by 67-43.00N…2023-08-15
- Cable operations by cableship ile de batz 01 jul thru 06 aug in vicinity: a. 64-55.8N 168-58.6W2017-06-30
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 14:07Z; 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.