Surveys

Hydrographic survey by M/V thalassa: a. 22 jun along trackline between 60-18.00N 021-00.00W and 63-01.00N…

North Atlantic · NAVAREA IV 497/15

issued: 2015-06-22 17:41Z
status: cancelled 2015-06-23 14:31Z (archive)
cancels: NAVAREA IV 493/15
authority: THALASSA 221248Z JUN 15.
position: 61.800, -27.218
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

NORTH ATLANTIC.
1. HYDROGRAPHIC SURVEY BY M/V THALASSA:
   A. 22 JUN ALONG TRACKLINE BETWEEN
      60-18.00N 021-00.00W AND 63-01.00N 024-37.00W.
   B. 23 JUN ALONG TRACKLINE BETWEEN
      63-00.00N 027-40.00W AND 63-00.00N 033-00.00W.
   C. 24 JUN ALONG TRACKLINE BETWEEN
      63-25.17N 023-55.22W AND 58-51.00N 031-17.00W.
   WIDE BERTH REQUESTED.
2. CANCEL NAVAREA IV 493/15.
3. CANCEL THIS MSG 25 JUN 15.

This area · survey operations

8 within 180 nm since 2015 · 0 in the last 12 months · 0 in force now

Season · when survey operations happen here

month of issue, all years in the archive

Timeline

Hydrographic survey by M/V thalassa: a. 21 jun along trackline between 61-55N 021-00W and 63-01N 024-37Wcancels · 2015-06-21
Hydrographic survey by M/V thalassa: a. 21 jun along trackline between 61-55N 021-00W and 63-01N 024-37Wreplaced · 2015-06-21
Hydrographic survey by M/V thalassa: a. 23 jun along trackline joining 63-00.00N 027-40.00W, 63-00.00N…cancelled by · 2015-06-23

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.