Surveys

Underwater operations 10 thru 23 jun by M/V thalassa within four miles of: a. 37-04.85N 031-55.18W

North Atlantic · HYDROLANT 1381/16

issued
2016-06-06 11:58Z
status
cancelled 2016-06-24 00:01Z (archive)
authority
THALASSA 060838Z JUN 16.
position
36.759, -33.225
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

NORTH ATLANTIC.
DNC 08.
1. UNDERWATER OPERATIONS 10 THRU 23 JUN BY
   M/V THALASSA WITHIN FOUR MILES OF:
   A. 37-04.85N 031-55.18W.
   B. 39-25.20N 034-06.53W.
   C. 37-35.49N 038-21.89W.
   D. 33-27.05N 032-23.80W.
   E. 36-15.07N 029-20.05W.
2. CANCEL THIS MSG 24 JUN 16.

This area · survey operations

22 within 180 nm since 2002 · 0 in the last 12 months · 0 in force now

02
05
10
15
16

Season · when survey operations happen here

J
F
M
A
M
J
J
A
S
O
N
D

month of issue, all years in the archive

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

75 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.