Exercises

Hazardous operations

North Pacific · Mariana Islands · HYDROPAC 851/12

issued
2012-03-24 21:42Z
status
cancelled 2012-03-26 14:59Z (archive)
self-cancels
2012-03-26 14:59Z
cancels
HYDROPAC 850/12
authority
COMCOGARD SECTOR GUAM 132/12 242030Z MAR 12 - COMCOGARD SECTOR GUAM 131/12 CX 242022Z MAR 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 252130Z TO 261359Z MAR
   WITHIN TEN MILES OF 16-01N 146-04E.
2. CANCEL HYDROPAC 850/12.
3. CANCEL THIS MSG 261459Z MAR.

Activity windows · 1 in this warning

opens (UTC)closes (UTC)locallength
2012-03-25 21:30Z2012-03-26 13:59Z16 h 29

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

02
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.