Exercises

Hazardous operations

North Atlantic · French Guiana · HYDROLANT 720/12

issued: 2012-03-31 22:39Z
status: cancelled 2012-04-04 15:39Z (archive)
self-cancels: 2012-04-06 20:00Z
authority: AVURNAV CAYENNE 12/12 312104Z MAR 12.
sea: North Atlantic Ocean
position: 5.334, -52.760
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

NORTH ATLANTIC.
FRENCH GUIANA.
HAZARDOUS OPERATIONS.
1. HAZARDOUS OPERATIONS 1100Z TO 1900Z DAILY
   02 THRU 06 APR IN AREA BOUND BY
   05-22N 052-52W, 05-15N 052-43W,
   05-20N 052-40W, 05-24N 052-48W,
   05-24N 052-49W.
2. CANCEL THIS MSG 062000Z APR.

Activity windows · 5 in this warning

opens (UTC)	closes (UTC)	local	length
2012-04-02 11:00Z	2012-04-02 19:00Z	—	8 h
2012-04-03 11:00Z	2012-04-03 19:00Z	—	8 h
2012-04-04 11:00Z	2012-04-04 19:00Z	—	8 h
2012-04-05 11:00Z	2012-04-05 19:00Z	—	8 h
2012-04-06 11:00Z	2012-04-06 19:00Z	—	8 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

280 within 180 nm since 1999 · 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

Cancel HYDROLANT 695/12, 720/12(24) and this msgcancelled by · 2012-04-04

Nearby now · within 120 nm

Cable operations 08 jul thru 31 aug by cableship ile d yeu within two miles of trackline joining 05-02.22N…Cable ops · 59.4 nm
Cable operations in progress until 31 aug in area bound by 05-48.42N 051-29.96W, 05-50.32N 051-27.42W,…Cable ops · 96.7 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.