Exercises

Hazardous operations

North Pacific · Mariana Islands · HYDROPAC 473/12

issued: 2012-02-19 00:26Z
status: cancelled 2012-02-24 09:30Z (archive)
self-cancels: 2012-02-24 09:30Z
authority: COMCOGARD SECTOR GUAM 84/12 182110Z FEB 12.
sea: North Pacific Ocean
position: 16.017, 146.067 · r 10.0 nm
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

NORTH PACIFIC.
MARIANA ISLANDS.
HAZARDOUS OPERATIONS.
1. HAZARDOUS OPERATIONS 2230Z TO 0830Z COMMENCING
   DAILY 19 THRU 23 FEB WITHIN TEN MILES
   OF 16-01N 146-04E.
2. CANCEL THIS MSG 240930Z FEB.

Activity windows · 5 in this warning

opens (UTC)	closes (UTC)	local	length
2012-02-19 22:30Z	2012-02-20 08:30Z	—	10 h
2012-02-20 22:30Z	2012-02-21 08:30Z	—	10 h
2012-02-21 22:30Z	2012-02-22 08:30Z	—	10 h
2012-02-22 22:30Z	2012-02-23 08:30Z	—	10 h
2012-02-23 22:30Z	2012-02-24 08:30Z	—	10 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

1446 within 180 nm since 2002 · 3 in the last 12 months · 1 in force now

Season · when military exercises happen here

month of issue, all years in the archive

Nearby now · within 120 nm

Due to tropical storm, the following ports are closed, until further noticeOther · 59.6 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.