Exercises

Hazardous operations

Western South Atlantic · Brazil-south Coast · HYDROLANT 3307/16

issued: 2016-12-08 04:04Z
status: cancelled 2016-12-13 00:26Z (archive)
self-cancels: 2016-12-13 15:00Z
authority: NAVAREA V COASTAL 1040/16 072120Z DEC 16.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN SOUTH ATLANTIC.
BRAZIL-SOUTH COAST.
HAZARDOUS OPERATIONS.
DNC 01.
1. HAZARDOUS OPERATIONS 130800Z TO 131400Z DEC
   IN AREA BETWEEN
   23-45S 24-00S AND 042-35W 042-52W.
2. CANCEL THIS MSG 131500Z DEC 16.

Activity windows · 1 in this warning

opens (UTC)	closes (UTC)	local	length
2016-12-13 08:00Z	2016-12-13 14:00Z	—	6 h

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 · 2016-12-13

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.