Surveys

Underwater operations 26 mar thru 07 apr by M/V alliance in area between 43-00N 43-20N and 010-00E 010-20E

HYDROLANT 952/01

What this record establishes

Archived notice · 2001-04-08 00:00Z

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) · MARIDIPART LA SPEZIA 139/01 231426Z MAR 01. Issued 2001-03-24 03:03Z. 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

issued
2001-03-24 03:03Z
status
Archived notice
authority
MARIDIPART LA SPEZIA 139/01 231426Z MAR 01
issued by
MARIDIPART LA SPEZIA
vessel
M/V ALLIANCE · 61 messages
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

1. UNDERWATER OPERATIONS 26 MAR THRU 07 APR BY M/V ALLIANCE
   IN AREA BETWEEN 43-00N 43-20N AND 010-00E 010-20E.
2. CANCEL HYDROLANT 935/01.
3. CANCEL THIS MSG 08 APR.

Reading this warning

Underwater operations
Divers or remotely operated vehicles are working below a vessel that cannot easily move out of the way.
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.
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.
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

50 survey operations listed in force · see all

Record snapshot 2026-09-24 23:07Z; 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.