Surveys
Underwater operations 09 thru 31 mar by M/V thalassa in: a. 00-00S 010-00W
South Atlantic · HYDROLANT 647/21
- issued
- 2021-03-05 14:23Z
- status
- cancelled 2021-04-01 00:01Z (archive)
- authority
- NAVAREA II 100/21 051413Z MAR 21.
- sea
- South Atlantic Ocean
- position
- -2.000, -6.667
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
SOUTH ATLANTIC. DNC 01. 1. UNDERWATER OPERATIONS 09 THRU 31 MAR BY M/V THALASSA IN: A. 00-00S 010-00W. B. 00-00S 000-00W. C. 06-00S 010-00W. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 01 APR 21.
This area · survey operations
6 within 180 nm since 2006 · 0 in the last 12 months · 0 in force now
06
10
15
20
22
- Underwater operations 25 feb thru 07 apr by M/V thalassa in area bound by 00-00S 010-00W, 06-00S 010-00W,…2022-02-21
- Underwater operations 16 feb thru 23 mar by M/V thalassa in area bound by 00-00S 010-00W, 00-00S 000-00W,…2020-02-12
- Oceanographic operations 04 thru 18 apr by M/V le suroit along trackline joining 01-30N 010-00W, 00-00N…2012-04-02
- Oceanographic operations 26 mar thru 01 apr by M/V le suroit along trackline between 00-00N 010-00W and…2012-03-24
- Underwater operations 24 may to 16 jun by M/V atalante in area bound by 00-00 000-00, 10-00S 010-00W, 06-00S…2006-05-23
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
86 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.