Exercises

Hazardous operations

Western North Atlantic · Brazil-north Coast · HYDROLANT 893/15

What this record establishes

Archived notice · 2015-04-14 16:54Z

This notice comes from the historical archive. Its archived status does not establish when or how the reported situation ended.

Source and dates
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · AVURNAV CAYENNE 11/15 141331Z APR.. Issued 2015-04-14 16:54Z. First collected 2026-08-17 13:38Z; last seen in collection 2026-08-17 15:46Z. Collection dates record ingestion, not a new incident or a fresh field observation.
Location covered
Western North Atlantic · Brazil-north Coast. No usable coordinates were parsed; a location-based nearby search is unavailable. Check the original wording for limits and qualifications.

Related notices and cancellation links

issued
2015-04-14 16:54Z
status
Archived notice
authority
AVURNAV CAYENNE 11/15 141331Z APR.
issued by
AVURNAV CAYENNE
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

WESTERN NORTH ATLANTIC.
BRAZIL-NORTH COAST.
HAZARDOUS OPERATIONS.
DNC 01.
CANCEL HYDROLANT 875/15 AND THIS MSG, OPERATIONS DELAYED.

Reading this warning

Hazardous operations
NGA's heading for activities that make an area dangerous — most often rocket launches, space debris and weapons firings, and some open-ended danger areas.
DNC (Digital Nautical Chart)
A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
Cancellation reference
A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
HYDROLANT
The U.S. long-range warning series for Atlantic waters outside NAVAREA IV, including the eastern Atlantic, the Mediterranean and adjoining seas.

All warning terms →

Nearby notices listed in force · within 120 nm

No parsed position is available for this comparison.

Worldwide in the collected sources

17 military exercises listed in force · see all

Record snapshot 2026-09-25 18:01Z; source collection times vary.

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.