Exercises

Hazardous operations

Brazil-east Coast · HYDROLANT 1507/12

issued: 2012-07-08 06:59Z
status: cancelled 2012-07-13 21:00Z (archive)
self-cancels: 2012-07-13 21:00Z
cancels: HYDROLANT 1150/12
authority: NAVAREA V E 889/12 062030Z JUL 12 - NAVAREA XIX 70/12 071830Z JUL 12.
sea: South Atlantic Ocean
position: -12.833, -37.500 · r 10.0 nm
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

BRAZIL-EAST COAST.
HAZARDOUS OPERATIONS.
1. HAZARDOUS OPERATIONS 121300Z TO 122000Z
   AND 131600Z TO 132000Z JUL
   WITHIN TEN MILES OF 12-50S 037-30W.
2. CANCEL HYDROLANT 1150/12(43).
3. CANCEL THIS MSG 132100Z JUL.

Activity windows · 2 in this warning

opens (UTC)	closes (UTC)	local	length
2012-07-12 13:00Z	2012-07-12 20:00Z	—	7 h
2012-07-13 16:00Z	2012-07-13 20:00Z	—	4 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

159 within 180 nm since 2004 · 0 in the last 12 months · 0 in force now

Season · when military exercises happen here

month of issue, all years in the archive

Timeline

Seismic survey in progress until 312359Z jul by M/V wg tasman towing 12 four mile long cables in area…cancels · 2012-05-29
Seismic survey in progress until 312359Z jul by M/V wg tasman towing 12 four mile long cables in area…replaced · 2012-05-29

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.