Exercises

Hazardous operations

Brazil-northeast Coast · HYDROLANT 1801/11

issued: 2011-11-01 01:16Z
status: cancelled 2011-11-05 22:00Z (archive)
self-cancels: 2011-11-05 22:00Z
authority: NAVAREA V E 991/11 010047Z NOV 11.
sea: South Atlantic Ocean
position: -5.791, -35.160 · r 3.0 nm
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

BRAZIL-NORTHEAST COAST.
HAZARDOUS OPERATIONS.
1. HAZARDOUS OPERATIONS 051730Z TO 052100Z NOV
   WITHIN THREE MILES OF
   05-47.48S 035-09.58W.
2. CANCEL THIS MSG 052200Z NOV.

Activity windows · 1 in this warning

opens (UTC)	closes (UTC)	local	length
2011-11-05 17:30Z	2011-11-05 21:00Z	—	3 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

380 within 180 nm since 1999 · 1 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

Hazardous operations 03 aug thru 11 sep in area bound by 05-42.53S 034-45.02W, 06-09.83S 034-46.82W,…Exercises · 20.4 nm
Odas buoy established in 05-09.46S 035-09.81WNav aids · 38 nm
Odas buoy bravo rn-l temporarily established until 20 oct in 04-53.00S 035-46.01WNav aids · 65.5 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.