Exercises

Hazardous operations

Southern Indian Ocean · HYDROPAC 854/12

issued: 2012-03-25 08:44Z
status: cancelled 2012-03-30 00:00Z (archive)
self-cancels: 2012-04-03 02:39Z
authority: WESTERN RANGE OP W3953 PT2 141507Z MAR 12.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

SOUTHERN INDIAN OCEAN.
HAZARDOUS OPERATIONS.
1. HAZARDOUS OPERATIONS 0056Z TO 0139Z DAILY
   30 MAR THRU 03 APR IN AREA BETWEEN
   56-45S 57-45S AND 085-00E 093-00E.
2. CANCEL THIS MSG 030239Z APR.

Activity windows · 5 in this warning

opens (UTC)	closes (UTC)	local	length
2012-03-30 00:56Z	2012-03-30 01:39Z	—	43 min
2012-03-31 00:56Z	2012-03-31 01:39Z	—	43 min
2012-04-01 00:56Z	2012-04-01 01:39Z	—	43 min
2012-04-02 00:56Z	2012-04-02 01:39Z	—	43 min
2012-04-03 00:56Z	2012-04-03 01:39Z	—	43 min

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

Timeline

Hazardous operationscancelled by · 2012-03-30

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.