Exercises

Hazardous operations

Brazil-south Coast · HYDROLANT 141/10

issued: 2010-01-23 00:03Z
status: cancelled 2010-01-29 21:00Z (archive)
self-cancels: 2010-01-29 21:00Z
cancels: HYDROLANT 94/10 HYDROLANT 129/10
authority: NAVAREA V S 143/10 221459Z JAN 10 - NAVAREA V N 150/10 221314Z JAN 10 - NAVAREA V E 149/10 221456Z JAN 10
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

BRAZIL-SOUTH COAST.
HAZARDOUS OPERATIONS.
1. HAZARDOUS OPERATIONS 271100Z TO 292000Z JAN
   IN AREA BETWEEN
   23-17.37S 23-22.58S AND 043-03.07W 043-08.39W.
2. CANCEL HYDROLANT 94/10, 129/10.
3. CANCEL THIS MSG 292100Z JAN.

Activity windows · 1 in this warning

opens (UTC)	closes (UTC)	local	length
2010-01-27 11:00Z	2010-01-29 20:00Z	—	57 h

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

Timeline

Nga chart 24240 (5TH ed)cancels · 2010-01-16
Nga chart 24220 (14TH ed)cancels · 2010-01-21
Nga chart 24240 (5TH ed)replaced · 2010-01-16
Nga chart 24220 (14TH ed)replaced · 2010-01-21

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.