Surveys
Underwater operations in progress until 12 sep by M/V thalassa along trackline between 27-36N 016-00W and…
Eastern North Atlantic · NAVAREA IV 453/12
- issued
- 2012-08-16 16:34Z
- status
- cancelled 2012-08-18 10:10Z (archive)
- authority
- NAVAREA II 272/12 161542Z AUG 12.
- position
- 26.800, -25.500
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
EASTERN NORTH ATLANTIC. 1. UNDERWATER OPERATIONS IN PROGRESS UNTIL 12 SEP BY M/V THALASSA ALONG TRACKLINE BETWEEN 27-36N 016-00W AND 26-00N 035-00W. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 13 SEP 12.
This area · survey operations
5 within 180 nm since 2001 · 0 in the last 12 months · 0 in force now
01
05
10
15
18
- Underwater operations 27 thru 30 jan by M/V pourquoi pas along trackline between 28-09N 015-25W and 25-14N…2018-01-23
- Oceanographic operations 060001Z dec to 242359Z jan 16 by M/V discovery along trackline joining 24-30.37N…2015-12-04
- Underwater operations in progress until 12 sep by M/V thalassa along trackline between 27-36N 016-00W and…2012-08-16
- Oceanographic operations 19 april thru 08 may by M/V poseidon vicinity of trackline joining 29-00N 015-30W,…2001-04-18
Season · when survey operations happen here
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F
M
A
M
J
J
A
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D
month of issue, all years in the archive
Timeline
- NAVAREA IV warnings in force 180900Z aug 12cancelled by · 2012-08-18
Nearby now · within 120 nm
Nothing else in force within 120 nm.
Worldwide now
73 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.