Exercises

Hazardous operations

North Pacific · HYDROPAC 546/12

issued
2012-02-26 10:11Z
status
cancelled 2012-02-27 17:50Z (archive)
self-cancels
2012-03-05 19:06Z
authority
WESTERN RANGE OP W4537 141525Z FEB 12.
sea
North Pacific Ocean
position
15.064, 176.759
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

NORTH PACIFIC.
HAZARDOUS OPERATIONS.
1. HAZARDOUS OPERATIONS 0936Z TO 1806Z DAILY
   01 THRU 05 MAR IN AREA BOUND BY
   15-31N 174-47E, 16-24N 178-15E,
   14-36N 178-43E, 13-44N 175-17E.
2. CANCEL THIS MSG 051906Z MAR.

Activity windows · 5 in this warning

opens (UTC)closes (UTC)locallength
2012-03-01 09:36Z2012-03-01 18:06Z8 h 30
2012-03-02 09:36Z2012-03-02 18:06Z8 h 30
2012-03-03 09:36Z2012-03-03 18:06Z8 h 30
2012-03-04 09:36Z2012-03-04 18:06Z8 h 30
2012-03-05 09:36Z2012-03-05 18:06Z8 h 30

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

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

00
05
10
15
18

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

Nothing else in force 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.