Nav aids

NAVTEX station naha 26-05.5N 127-40.1E at reduced power 2300Z to 0700Z commencing daily 12 thru 15 oct,…

Eastern China Sea · HYDROPAC 3358/15

What this record establishes

Archived notice · 2015-10-15 11:56Z

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 XI 789/15 121134Z OCT 15.. Issued 2015-10-12 11:43Z. 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
Eastern China Sea. The parsed report position is 26.092, 127.668. 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 Eastern China Sea →

Activity windows · 8 in this warning

opens (UTC)closes (UTC)locallength
2015-10-12 23:00Z2015-10-13 07:00Z—8 h
2015-10-13 23:00Z2015-10-14 07:00Z—8 h
2015-10-14 23:00Z2015-10-15 07:00Z—8 h
2015-10-15 23:00Z2015-10-16 07:00Z—8 h
2015-10-18 23:00Z2015-10-19 07:00Z—8 h
2015-10-19 23:00Z2015-10-20 07:00Z—8 h
2015-10-20 23:00Z2015-10-21 07:00Z—8 h
2015-10-21 23:00Z2015-10-22 07:00Z—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
2015-10-12 11:43Z
status
Archived notice
self-cancels
2015-10-22 08:00Z
authority
NAVAREA XI 789/15 121134Z OCT 15.
NAVAREA
NAVAREA XI · named as the source of this relay
sea
Eastern China Sea
position
26.092, 127.668
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

WESTERN NORTH PACIFIC.
JAPAN.
NANSEI SHOTO.
NAVTEX.
1. NAVTEX STATION NAHA 26-05.5N 127-40.1E AT REDUCED POWER
   2300Z TO 0700Z COMMENCING DAILY 12 THRU 15 OCT,
   ALTERNATE 2300Z TO 0700Z COMMENCING DAILY 18 THRU 21 OCT.
2. CANCEL THIS MSG 220800Z OCT 15.

Reading this warning

NAVTEX
An automated medium-frequency radio service that sends coastal warnings as text to a small printer or screen on board.
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.
CANCEL THIS MSG
The warning's own expiry: a line telling the reader when the message cancels itself.
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.

All warning terms →

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

6 within 180 nm since 2000 · 0 in the last 12 months · 0 listed in force now

00
05
10
15
17

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 2026-10-02 17:59Z; 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.