Surveys

Oceanographic operations in progress until 29 aug by M/V thalassa in area between 25-00N 27-00N and 035-00W…

North Atlantic · NAVAREA IV 480/12

issued: 2012-08-27 08:49Z
status: cancelled 2012-08-30 00:01Z (archive)
cancels: NAVAREA IV 474/12
authority: THALASSA 261346Z AUG 12.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

NORTH ATLANTIC.
1. OCEANOGRAPHIC OPERATIONS IN PROGRESS UNTIL
   29 AUG BY M/V THALASSA IN AREA BETWEEN
   25-00N 27-00N AND 035-00W 037-00W.
2. CANCEL NAVAREA IV 474/12.
3. CANCEL THIS MSG 30 AUG 12.

Timeline

Oceanographic operations 26 and 27 aug by M/V thalassa in area between 25-00N 27-00N and 035-00W 037-00W 2.…cancels · 2012-08-24
Oceanographic operations 26 and 27 aug by M/V thalassa in area between 25-00N 27-00N and 035-00W 037-00W 2.…replaced · 2012-08-24
Oceanographic operations in progress until 01 sep by M/V thalassa in area between 25-00N 27-00N and 035-00W…cancelled by · 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.