Surveys

Underwater operations 110800Z to 120800Z sep in area between 64-30N 66-00N and 005-30W 008-30W

HYDROLANT 3133/00

What this record establishes

Archived notice · 2000-09-11 06:30Z

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) · NAVAREA ONE 398/00 101711Z SEP 00. Issued 2000-09-10 17:40Z. 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
No named location parsed. 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

Activity windows · 1 in this warning

opens (UTC)closes (UTC)locallength
2000-09-11 08:00Z2000-09-12 08:00Z—24 h

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

issued
2000-09-10 17:40Z
status
Archived notice
self-cancels
2000-09-12 09:00Z
authority
NAVAREA ONE 398/00 101711Z SEP 00
issued by
NAVAREA ONE
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

1. UNDERWATER OPERATIONS 110800Z TO 120800Z SEP IN AREA
   BETWEEN 64-30N 66-00N AND 005-30W 008-30W.
2. CANCEL THIS MSG 120900Z SEP.

Reading this warning

Underwater operations
Divers or remotely operated vehicles are working below a vessel that cannot easily move out of the way.
Date-time group (DTG)
A compact UTC timestamp — day, hour and minute followed by Z — such as 201500Z for the 20th at 15:00 UTC.
Position (degrees and minutes)
How warnings write positions: degrees, a hyphen, then minutes, with N/S and E/W — 49-40.8N 003-43.8W.
CANCEL THIS MSG
The warning's own expiry: a line telling the reader when the message cancels itself.

All warning terms →

Nearby notices listed in force · within 120 nm

No parsed position is available for this comparison.

Worldwide in the collected sources

56 survey operations listed in force · see all

Record snapshot 2026-10-03 17:12Z; source collection times vary.

Surveys

Hydrographic and scientific survey vessels, often towing long arrays. All current survey operations →

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.