Exercises

Hazardous operations

Brazil-east Coast · HYDROLANT 2389/12

issued: 2012-10-12 14:14Z
status: cancelled 2012-10-16 19:00Z (archive)
self-cancels: 2012-10-16 19:00Z
authority: NAVAREA V E 1377/12 121057Z OCT 12.
sea: South Atlantic Ocean
position: -18.500, -39.000 · r 6.0 nm
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

BRAZIL-EAST COAST.
HAZARDOUS OPERATIONS.
1. HAZARDOUS OPERATIONS 161300Z TO 161800Z OCT
   WITHIN SIX MILES OF 18-30S 039-00W.
2. CANCEL THIS MSG 161900Z OCT 12.

Activity windows · 1 in this warning

opens (UTC)	closes (UTC)	local	length
2012-10-16 13:00Z	2012-10-16 18:00Z	—	5 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

88 within 180 nm since 2003 · 0 in the last 12 months · 0 in force now

Season · when military exercises happen here

month of issue, all years in the archive

Nearby now · within 120 nm

Yellow odas buoy established in 17-58.12S 038-41.48W until 19 octNav aids · 36.4 nm
Foul ground until 06 dec 27 in area bound by 19-53.87S 039-59.68W, 19-54.15S 039-59.27W, 19-53.08S…Wrecks · 100.5 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.