Surveys
Survey operations in progress until 20 feb 18 by M/V ramform tethys and M/V thor modi towing 16 8100 meter…
Western South Atlantic · Brazil-north Coast · HYDROLANT 3536/17
- issued
- 2017-11-01 02:16Z
- status
- cancelled 2018-02-07 22:49Z (archive)
- authority
- NAVAREA V COASTAL N 888/17 010025Z NOV 17.
- position
- -4.133, -36.802
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
WESTERN SOUTH ATLANTIC. BRAZIL-NORTH COAST. DNC 01. 1. SURVEY OPERATIONS IN PROGRESS UNTIL 20 FEB 18 BY M/V RAMFORM TETHYS AND M/V THOR MODI TOWING 16 8100 METER LONG CABLES IN AREA BOUND BY 03-36.0S 037-19.3W, 03-35.3S 037-18.7W, 03-35.4S 037-05.5W, 03-35.4S 036-59.5W, 03-41.1S 036-59.5W, 03-44.6S 036-55.8W, 03-44.5S 036-31.9W, 03-50.2S 036-25.6W, 04-00.7S 036-24.6W, 04-04.2S 036-20.9W, 04-07.2S 036-12.3W, 04-15.2S 036-03.9W, 04-48.5S 036-03.9W, 04-47.6S 036-12.8W, 04-45.3S 036-20.3W, 04-42.7S 036-27.8W, 04-35.7S 036-52.6W, 04-30.9S 036-58.6W, 04-23.0S 037-07.1W, 04-09.7S 037-07.1W, 03-58.6S 037-28.5W, 03-51.5S 037-36.1W, 03-39.6S 037-48.4W, 03-27.3S 037-35.3W, 03-35.3S 037-27.7W, 03-36.0S 037-27.0W. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 21 FEB 18.
This area · survey operations
92 within 180 nm since 1999 · 0 in the last 12 months · 0 in force now
99
00
05
10
15
20
23
- Survey operations in progress until 182300Z may in areas bound by: a. 02-56.00S 038-00.20W, 02-56.00S…2023-05-18
- Underwater operations 0800Z to 2100Z daily 05 sep thru 05 mar 23 by M/V paracuru in 04-52.42S 036-22.45W2022-09-05
- Underwater operations 1100Z to 1900Z daily 15 thru 22 jun by M/V texas and M/V seamaster I in 05-42.08S…2021-06-14
- Underwater operations 1100Z to 1900Z daily 01 thru 06 jun by M/V texas and M/V seamaster I in 05-42.08S…2021-05-31
- Survey operations in progress 0800Z to 1700Z daily until 23 jul by M/V raisa II in area bound by 03-43.71S…2020-07-17
- Survey operations in progress until 15 apr by M/V ocean dream and M/V bgp pioneer eco warrior each towing…2020-03-16
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
Timeline
Nearby now · within 120 nm
- Odas buoy bravo rn-l temporarily established until 20 oct in 04-53.00S 035-46.01WNav aids · 76.6 nm
- Odas buoy established in 05-09.46S 035-09.81WNav aids · 115.8 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.