Gustavus dgps station 58-25.1N 135-41.8W inoperative from 061800Z to 070200Z dec
The Coastal Waters of Southeast Alaska and British Columbia · NAVAREA XII 540/17
What this record establishes
Archived notice · 2017-12-07 03:00Z
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) · COGARD CYBERCOM 460/17 280651Z NOV 17.. Issued 2017-11-28 17:17Z. 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
- The Coastal Waters of Southeast Alaska and British Columbia. The parsed report position is 58.418, -135.697. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2017-12-06 18:00Z | 2017-12-07 02:00Z | — | 8 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2017-11-28 17:17Z
- status
- Archived notice
- self-cancels
- 2017-12-07 03:00Z
- authority
- COGARD CYBERCOM 460/17 280651Z NOV 17.
- NAVAREA
- NAVAREA XII
- issued by
- COGARD CYBERCOM
- sea
- The Coastal Waters of Southeast Alaska and British Columbia
- position
- 58.418, -135.697
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
EASTERN NORTH PACIFIC. ALASKA-SOUTHEAST COAST. CHART 16016. 1. GUSTAVUS DGPS STATION 58-25.1N 135-41.8W INOPERATIVE FROM 061800Z TO 070200Z DEC. 2. CANCEL THIS MSG 070300Z DEC 17.
Reading this warning
- Chart reference
- The number of the nautical chart on which the reported position lies.
- GNSS / GPS
- Satellite positioning — GPS and other systems — and the testing, jamming and interference that make it unreliable in an area.
- 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.
- Inoperative / unreliable / off air
- An aid or radio service is not working as charted or published.
- Date-time group (DTG)
- A compact UTC timestamp — day, hour and minute followed by Z — such as 201500Z for the 20th at 15:00 UTC.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
Collected reports in this area · aids-to-navigation notices
152 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.
- Biorka dgps station 56-51.3N 135-32.4W unusable2020-06-18
- Biorka dgps station 56-51.3N 135-32.4W inoperative2019-09-25
- Biorka dgps station 56-51.3N 135-32.4W unusable2019-08-06
- Gustavus dgps station 58-25.1N 135-41.8W unreliable2019-06-27
- Biorka dgps station 56-51.3N 135-32.4W unreliable2019-06-27
- Biorka dgps station 56-51.3N 135-32.4W off air2019-05-14
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
134 aids-to-navigation notices listed in force · see all
Record snapshot 2026-10-03 09:30Z; source collection times vary.
Nav aids
Lights extinguished, buoys off station, RACON/NAVTEX outages. All current aids-to-navigation notices →
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.