Exercises

Hazardous operations 0400Z to 0700Z daily 03 thru 06 may in area bound by 40-41.0N 135-10.0E, 42-27.0N…

HYDROPAC 642/00

issued
2000-04-28 15:15Z
status
cancelled 2000-05-02 06:10Z (archive)
self-cancels
2000-05-06 08:00Z
authority
NAVAREA XIII 029/00 280936Z APR 00
sea
Japan Sea
position
42.151, 134.564
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. HAZARDOUS OPERATIONS 0400Z TO 0700Z DAILY 03 THRU 06 MAY
   IN AREA BOUND BY 40-41.0N 135-10.0E, 42-27.0N 132-23.0E,
   42-38.5N 132-23.0E, 42-38.5N 133-20.0E, 43-25.0N 135-42.0E,
   42-00.0N 135-55.0E.
2. CANCEL THIS MSG 060800Z MAY.

Activity windows · 4 in this warning

opens (UTC)closes (UTC)locallength
2000-05-03 04:00Z2000-05-03 07:00Z3 h
2000-05-04 04:00Z2000-05-04 07:00Z3 h
2000-05-05 04:00Z2000-05-05 07:00Z3 h
2000-05-06 04:00Z2000-05-06 07:00Z3 h

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

240 within 180 nm since 1999 · 2 in the last 12 months · 2 in force now

99
00
05
10
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

Timeline

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.