Surveys

Oceanographic operations in progress until 03 sep by M/V thalassa in area between 25-00N 27-00N and 035-00W…

North Atlantic · NAVAREA IV 496/12

issued: 2012-08-31 16:27Z
status: cancelled 2012-09-04 00:01Z (archive)
cancels: NAVAREA IV 489/12
authority: THALLSA 311338Z AUG 12.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

NORTH ATLANTIC.
1. OCEANOGRAPHIC OPERATIONS IN PROGRESS UNTIL
   03 SEP BY M/V THALASSA IN AREA BETWEEN
   25-00N 27-00N AND 035-00W 037-00W.
2. CANCEL NAVAREA IV 489/12.
3. CANCEL THIS MSG 04 SEP 12.

Timeline

Oceanographic operations in progress until 01 sep by M/V thalassa in area between 25-00N 27-00N and 035-00W…cancels · 2012-08-29
Oceanographic operations in progress until 01 sep by M/V thalassa in area between 25-00N 27-00N and 035-00W…replaced · 2012-08-29

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.