Nav aids

Nga chart 16016 (21ST ed)

The Coastal Waters of Southeast Alaska and British Columbia · NAVAREA XII 318/08

What this record establishes

Archived notice · 2008-08-13 05:00Z

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 NAVCEN DGPS 692/08 091030Z AUG 08.. Issued 2008-08-10 05:17Z. 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 55.068, -131.600. 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

Current notices and reporting history in the The Coastal Waters of Southeast Alaska and British Columbia →

Activity windows · 2 in this warning

opens (UTC)closes (UTC)locallength
2008-08-11 16:00Z2008-08-12 01:00Z—9 h
2008-08-12 16:00Z2008-08-13 04:00Z—12 h

Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.

issued
2008-08-10 05:17Z
status
Archived notice
self-cancels
2008-08-13 05:00Z
authority
COGARD NAVCEN DGPS 692/08 091030Z AUG 08.
NAVAREA
NAVAREA XII
issued by
COGARD NAVCEN
sea
The Coastal Waters of Southeast Alaska and British Columbia
position
55.068, -131.600
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

NGA CHART 16016 (21ST ED).
1. ANNETTE ISLAND DGPS STATION 55-04.1N 131-36.0W UNUSABLE
   111600Z TO 120100Z AND 121600Z TO 130400Z AUG.
2. CANCEL NAVAREA XII 314/08.
3. CANCEL THIS MSG 130500Z AUG.

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.
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.
Cancellation reference
A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
NAVAREA
One of the 21 ocean areas of the World-Wide Navigational Warning Service, each with a coordinator that broadcasts long-range warnings.
CANCEL THIS MSG
The warning's own expiry: a line telling the reader when the message cancels itself.

All warning terms →

Collected reports in this area · aids-to-navigation notices

184 within 180 nm since 2006 · 1 in the last 12 months · 0 listed in force now

06
10
15
20
25
26

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

J
F
M
A
M
J
J
A
S
O
N
D

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 18:15Z; 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.