Surveys

Hydrographic survey by M/V thalassa: a. 03 jul along trackline between 54-10N 035-05W and 52-00N 035-05W

North Atlantic · NAVAREA IV 535/15

issued: 2015-07-03 13:26Z
status: cancelled 2015-07-06 00:01Z (archive)
cancels: NAVAREA IV 530/15
authority: THALASSA 031250Z JUL 15.
position: 51.732, -35.083
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

NORTH ATLANTIC.
1. HYDROGRAPHIC SURVEY BY M/V THALASSA:
   A. 03 JUL ALONG TRACKLINE BETWEEN
      54-10N 035-05W AND 52-00N 035-05W.
   B. 04 JUL ALONG TRACKLINE BETWEEN
      52-00N 035-05W AND 50-00N 035-05W.
   C. 05 JUL ALONG TRACKLINE BETWEEN
      52-00N 035-05W AND 50-00N 035-05W.
   WIDE BERTH REQUESTED.
2. CANCEL NAVAREA IV 530/15.
3. CANCEL THIS MSG 06 JUL 15.

This area · survey operations

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

Hydrographic survey by M/V thalassa: a. 02 jul along trackline between 55-48N 034-49W and 54-10N 035-05W2015-07-02

Season · when survey operations happen here

month of issue, all years in the archive

Timeline

Hydrographic survey by M/V thalassa: a. 02 jul along trackline between 55-48N 034-49W and 54-10N 035-05Wcancels · 2015-07-02
Hydrographic survey by M/V thalassa: a. 02 jul along trackline between 55-48N 034-49W and 54-10N 035-05Wreplaced · 2015-07-02

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.