Exercises

Hazardous operations 2300Z to 0900Z daily 30 apr thru 30 may, in area bound by 28-15.25N 146-29.78E,…

Western North Pacific · HYDROPAC 1381/23

issued
2023-04-26 11:59Z
status
cancelled 2023-05-31 10:00Z (archive)
self-cancels
2023-05-31 10:00Z
authority
NAVAREA XI 148/23 261152Z APR 23.
sea
North Pacific Ocean
position
26.584, 146.193
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN NORTH PACIFIC.
DNC 12.
1. HAZARDOUS OPERATIONS 2300Z TO 0900Z DAILY
   30 APR THRU 30 MAY, IN AREA BOUND BY
   28-15.25N 146-29.78E, 25-25.27N 147-37.78E,
   25-00.27N 145-35.80E, 27-55.25N 144-57.80E.
2. CANCEL THIS MSG 311000Z MAY 23.

Activity windows · 31 in this warning

opens (UTC)closes (UTC)locallength
2023-04-30 23:00Z2023-05-01 09:00Z—10 h
2023-05-01 23:00Z2023-05-02 09:00Z—10 h
2023-05-02 23:00Z2023-05-03 09:00Z—10 h
2023-05-03 23:00Z2023-05-04 09:00Z—10 h
2023-05-04 23:00Z2023-05-05 09:00Z—10 h
2023-05-05 23:00Z2023-05-06 09:00Z—10 h
2023-05-06 23:00Z2023-05-07 09:00Z—10 h
2023-05-07 23:00Z2023-05-08 09:00Z—10 h
… 23 more

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

This area · military exercises

237 within 180 nm since 2000 · 2 in the last 12 months · 2 in force now

00
05
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15
20
25
26

Season · when military exercises happen here

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

month of issue, all years in the archive

Nearby now · within 120 nm

Worldwide now

35 military exercises in force · see all

Exercises

Gunnery, firing and naval exercise areas. All current military exercises →

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.