Underwater seamount, least depth 900 feet, reported in 78-36.91N 158-21.35W
Arctic Ocean · HYDROARC 2/07
What this record establishes
Archived notice · 2007-09-04 17:14Z
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) · GEORGE NEWTON EMAIL 31 AUG 07.. Issued 2007-08-31 14:42Z. 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
- Arctic Ocean. The parsed report position is 78.615, -158.356. 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
- Underwater seamount, least depth 925 meters, reported in 78-36.91N 158-21.35Wlater cancellation notice
- issued
- 2007-08-31 14:42Z
- status
- Archived notice
- authority
- GEORGE NEWTON EMAIL 31 AUG 07.
- issued by
- GEORGE NEWTON EMAIL
- sea
- Arctic Ocean
- position
- 78.615, -158.356
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
UNDERWATER SEAMOUNT, LEAST DEPTH 900 FEET, REPORTED IN 78-36.91N 158-21.35W.
Reading this warning
- 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.
Collected reports in this area · other warnings
3 within 180 nm since 2007 · 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.
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
21 other warnings listed in force · see all
Record snapshot 2026-09-25 02:27Z; source collection times vary.
Other
Everything the classifier did not place elsewhere. All current other warnings →
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.