Exercises
Hazardous operations
North Atlantic · HYDROLANT 241/17
What this record establishes
Archived notice · 2017-01-23 16:37Z
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) · SFHGA 23 JAN 17.. Issued 2017-01-23 16:37Z. 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
- North Atlantic. 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
- Hazardous operations 0104Z to 0254Z daily 28 jan thru 27 feb in area bound by 01-53N 002-08W, 01-34N…cancelled by this notice
- Hazardous operationscancelled by this notice
- issued
- 2017-01-23 16:37Z
- status
- Archived notice
- authority
- SFHGA 23 JAN 17.
- issued by
- SFHGA
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
NORTH ATLANTIC. HAZARDOUS OPERATIONS. DNC 01. CANCEL HYDROLANT 230/17, 232/17 AND THIS MSG, 235/17 REFERS.
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.
Nearby notices listed in force · within 120 nm
No parsed position is available for this comparison.
Worldwide in the collected sources
9 military exercises listed in force · see all
Record snapshot 2026-10-03 03:07Z; 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.