Surveys

Underwater survey in progress until 20 jan by M/V western wave towing six kilometer long cable in area…

HYDROLANT 4177/00

What this record establishes

Archived notice · 2001-01-17 17:39Z

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 III 532/00 AOR-E EGC #981 210004Z DEC 00. Issued 2000-12-21 00:30Z. 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
2000-12-21 00:30Z
status
Archived notice
authority
NAVAREA III 532/00 AOR-E EGC #981 210004Z DEC 00
NAVAREA
NAVAREA III · named as the source of this relay
vessel
M/V WESTERN WAVE · 12 messages
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

1. UNDERWATER SURVEY IN PROGRESS UNTIL 20 JAN BY M/V WESTERN WAVE
   TOWING SIX KILOMETER LONG CABLE IN AREA BETWEEN
   40-10N 39-46N AND 016-50E 017-16E. WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 21 JAN 2001.

Reading this warning

Towed array / streamer
Equipment towed a long way behind a vessel — sonar, a hydrophone cable, a sampling sled — invisible at the surface.
Tow / towing
A vessel towing another vessel, a barge or a structure — slow, hard to manoeuvre, and with a long line between.
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.
Wide berth requested
Keep well clear — or, when a distance is given ("TWO MILE BERTH REQUESTED"), at least that far away.
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

54 survey operations listed in force · see all

Record snapshot 2026-09-29 17:14Z; 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.