Sub-surface scientific moorings established in: a. 69-46.31N 139-15.49W, top float 16 meters
Beaufort Sea · HYDROARC 270/18
What this record establishes
Archived notice · 2019-01-04 13:40Z
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 XVII 97/18 112331Z OCT 18.. Issued 2018-10-11 23:48Z. 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
- Beaufort Sea. The parsed report position is 70.212, -136.591. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.
Related notices and cancellation links
- Sub-surface scientific moorings established in: a. 69-46.31N 139-15.49W, top float 26 meterscancelled by this notice
- issued
- 2018-10-11 23:48Z
- status
- Archived notice
- authority
- NAVAREA XVII 97/18 112331Z OCT 18.
- NAVAREA
- NAVAREA XVII · named as the source of this relay
- sea
- Beaufort Sea
- position
- 70.212, -136.591
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
BEAUFORT SEA. CANADA. DNC 27. CHART 15926. 1. SUB-SURFACE SCIENTIFIC MOORINGS ESTABLISHED IN: A. 69-46.31N 139-15.49W, TOP FLOAT 16 METERS. B. 70-51.79N 135-01.45W, TOP FLOAT 170 METERS. C. 70-00.09N 135-29.42W, TOP FLOAT 700 METERS. 2. CANCEL HYDROARC 322/17.
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.
- Chart reference
- The number of the nautical chart on which the reported position lies.
- Scientific mooring
- Instruments anchored to the seabed and held up by floats, sometimes just below the surface, left for months to measure the ocean.
- 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.
- Cancellation reference
- A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
- HYDROARC
- The U.S. long-range warning series for the Arctic Ocean.
Collected reports in this area · survey operations
38 within 180 nm since 2006 · 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.
- Sub-surface scientific moorings established in 71-00.13N 135-29.44W2019-12-04
- Sub-surface scientific moorings established in: a. 70-51.79N 135-01.45W, top float 35 meters2019-08-06
- Sub-surface scientific moorings established in: a. 69-46.31N 139-15.49W, top float 26 meters2017-10-08
- Scientific moorings, at depth 183 meters and attached by 530 meter long line, established in: a. 70-52.18N…2015-10-02
- Scientific mooring, at depth 61 meters, established in 70-25.94N 139-01.24W2015-10-01
- Scientific mooring, at depth 214 meters, established in 71-01.00N 133-48.51W2015-09-27
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
- RACON at pullen island light 69-46.60N 134-24.40W inoperativeNav aids · 51.9 nm
Worldwide in the collected sources
54 survey operations listed in force · see all
Record snapshot 2026-09-29 13:46Z; 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.