Exercises

Hazardous operations 281150Z to 281446Z apr, alternate 291150Z to 291446Z apr in area bound by 14-43N…

HYDROLANT 841/03

issued: 2003-04-24 17:00Z
status: cancelled 2003-04-29 15:46Z (archive)
self-cancels: 2003-04-29 15:46Z
cancels: HYDROLANT 579/03
authority: CCAFS ALTRV#1995 EMAIL ARTHUR LADD 240915Q APR 03; WZ 542/03 241024Z APR 03
sea: North Atlantic Ocean
position: 13.050, -35.550
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. HAZARDOUS OPERATIONS 281150Z TO 281446Z APR, ALTERNATE
   291150Z TO 291446Z APR IN AREA BOUND BY
   14-43N 035-42W, 12-38N 035-12W,
   10-58N 033-15W, 13-06N 036-36W.
2. CANCEL HYDROLANT 579/03(37), OPERATIONS COMPLETED.
3. CANCEL THIS MSG 291546Z APR.

Activity windows · 2 in this warning

opens (UTC)	closes (UTC)	local	length
2003-04-28 11:50Z	2003-04-28 14:46Z	—	2 h 56
2003-04-29 11:50Z	2003-04-29 14:46Z	—	2 h 56

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

3 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

Timeline

Survey operations in progress during daylight hours until further notice by M/V explorer in area bound by…cancels · 2003-03-18
Survey operations in progress during daylight hours until further notice by M/V explorer in area bound by…replaced · 2003-03-18

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.