Surveys

Oceanographic operations by M/V alliance and M/V manning: a. 200600Z oct to 061100Z nov in area between…

HYDROLANT 2254/99

issued: 1999-10-21 17:59Z
status: cancelled 1999-11-03 13:56Z (archive)
self-cancels: 1999-11-11 19:00Z
cancels: HYDROLANT 2238/99
authority: MARIDIPART LA SPEZIA 610/99 211441Z OCT 99
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. OCEANOGRAPHIC OPERATIONS BY M/V ALLIANCE AND M/V MANNING:
   A. 200600Z OCT TO 061100Z NOV IN AREA BETWEEN
      43-34N 43-44N AND 009-45E 010-00E.
   B. 210600Z TO 232159Z OCT IN AREA BETWEEN
      42-50N 43-00N AND 010-10E 010-20E.
   C. 061100Z TO 111800Z NOV IN AREA BETWEEN
      43-34N 43-44N AND 009-15E 009-30E.
   WIDE BERTH REQUESTED.
2. CANCEL HYDROLANT 2238/99.
3. CANCEL THIS MSG 111900Z NOV.

Activity windows · 3 in this warning

opens (UTC)	closes (UTC)	local	length
1999-10-20 06:00Z	1999-11-06 11:00Z	—	413 h
1999-10-21 06:00Z	1999-10-23 21:59Z	—	63 h 59
1999-11-06 11:00Z	1999-11-11 18:00Z	—	127 h

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

Timeline

Oceanographic operations by M/V alliance and M/V manning: a. 200600Z oct to 061100Z nov in area between…replaced · 1999-10-19
Oceanographic operations by M/V alliance and M/V manning: a. in progress until 061100Z nov in area between…cancelled by · 1999-11-03

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

84 survey operations in force · see all

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.