Surveys

Survey operations 04 thru 11 sep by M/V thalassa in: a. 36-15.30N 29-19.90W

North Atlantic · Azores · HYDROLANT 2518/20

issued: 2020-08-14 14:52Z
status: cancelled 2020-09-10 16:23Z (archive)
authority: THALASSA 141431Z AUG 20.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

NORTH ATLANTIC.
AZORES.
DNC 08.
1. SURVEY OPERATIONS 04 THRU 11 SEP BY
   M/V THALASSA IN:
   A. 36-15.30N 29-19.90W.
   B. 33-27.20N 32-24.11W.
   C. 37-35.51N 38-21.58W.
   D. 39-25.34N 34-06.48W.
   E. 37-04.82N 31-55.20W.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 12 SEP 20.

Timeline

Cancel HYDROLANT 2518/20 and this msg, operations completedcancelled by · 2020-09-10

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

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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.