Surveys

Hydrographic survey by M/V thalassa: a. 23 jun along trackline joining 63-00.00N 027-40.00W, 63-00.00N…

North Atlantic · NAVAREA IV 500/15

issued: 2015-06-23 14:31Z
status: cancelled 2015-06-24 12:37Z (archive)
cancels: NAVAREA IV 497/15
authority: THALASSA 231248Z JUN 15.
position: 61.989, -28.608
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

NORTH ATLANTIC.
1. HYDROGRAPHIC SURVEY BY M/V THALASSA:
   A. 23 JUN ALONG TRACKLINE JOINING
      63-00.00N 027-40.00W, 63-00.00N 033-00.00W,
      63-25.17N 023-55.22W.
   B. 24 JUN ALONG TRACKLINE BETWEEN
      63-25.17N 023-55.22W AND 58-51.00N 031-17.00W.
   C. 25 JUN ALONG TRACKLINE BETWEEN
      62-07.17N 026-13.00W AND 58-51.00N 031-17.00W.
   WIDE BERTH REQUESTED.
2. CANCEL NAVAREA IV 497/15.
3. CANCEL THIS MSG 26 JUN 15.

This area · survey operations

7 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. 22 jun along trackline between 60-18.00N 021-00.00W and 63-01.00N…cancels · 2015-06-22
Hydrographic survey by M/V thalassa: a. 22 jun along trackline between 60-18.00N 021-00.00W and 63-01.00N…replaced · 2015-06-22
Hydrographic survey by M/V thalassa: a. 24 jun along trackline between 63-25.17N 023-55.22W and 58-51.00N…cancelled by · 2015-06-24

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.