Surveys
Survey operations in progress until 25 jul by m/ ramform tethys towing 12 600 meter long cables in area…
Western South Atlantic · Brazil · HYDROLANT 1803/22
- issued
- 2022-07-19 03:21Z
- status
- cancelled 2022-07-22 03:19Z (archive)
- self-cancels
- 2022-07-26 00:01Z
- authority
- NAVAREA V 361/22 190257Z JUL 22.
- sea
- South Atlantic Ocean
- position
- -22.007, -39.707
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
WESTERN SOUTH ATLANTIC. BRAZIL. DNC 01. 1. SURVEY OPERATIONS IN PROGRESS UNTIL 25 JUL BY M/ RAMFORM TETHYS TOWING 12 600 METER LONG CABLES IN AREA BOUND BY 21-46.44S 040-00.47W, 21-46.54S 039-24.33W, 22-14.48S 039-24.37W, 22-14.38S 040-00.59W, 22-12.54S 040-00.58W, 22-12.14S 040-00.32W, 22-11.41S 040-00.16W, 22-10.45S 040-00.03W, 22-09.08S 040-00.02W, 22-06.10S 040-00.38W, 22-05.37S 040-00.55W. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 260001Z JUL 22.
This area · survey operations
709 within 180 nm since 2000 · 23 in the last 12 months · 15 in force now
00
05
10
15
20
25
26
- Underwater operations 1100Z to 2100Z daily 20 aug thru 03 sep by M/V charlie and M/V comando b in 20-24.27S…2026-08-19
- Underwater operations 1100Z to 2100Z daily 20 aug thru 03 sep by M/V comando b and M/V linden trader in…2026-08-19
- Underwater operations 1100Z to 2100Z daily 20 aug thru 03 sep by M/V hui an and M/V comando b in 20-23.17S…2026-08-19
- Underwater operations 0800Z to 1800Z daily until 28 aug by M/V spar aries and M/V comando b in 20-48.85S…2026-08-18
- Underwater operations 0800Z to 1800Z daily until 29 aug by M/V comando b and M/V am kirti in 20-19.03S…2026-08-18
- Underwater operations 1100Z to 2100Z daily 18 thru 28 aug by M/V spar aries and M/V comando b in 20-48.85S…2026-08-17
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
- Survey operations in progress until 09 jul 27 by M/V bgp dragon towing 250 meter long cable in area bound by…Surveys · 23.9 nm
- Underwater operations in progress until 170259Z aug in 22-22.48S 040-25.05WSurveys · 45.3 nm
- Underwater operations 1000Z to 2000Z daily until 02 nov 26 by M/V fugro vaquita in: a. 22-26.32S 040-25.47WSurveys · 47.5 nm
- Underwater operations in progress until 140001Z nov by M/V fugro vaquita in area bound by 22-03.00S…Surveys · 55 nm
- Underwater operations 281000Z jul to 192100Z aug by M/V umi polaris in area bound by 21-53.65S 040-49.70W,…Surveys · 58.9 nm
- Underwater operations in progress until 312300Z aug by M/V fugro vaquita in area bound by 21-35.43S…Surveys · 61.8 nm
- Survey operations in progress until 312200Z aug in area bound by 21-36.17S 041-00.00W, 21-36.05S 040-37.59W,…Surveys · 62.5 nm
- Odas buoy temporarily established until 13 apr 27 in 21-34.20S 040-43.62WNav aids · 62.7 nm
- RACON at cabo sao tome light 22-02.52S 041-03.17W off air until 28 sepNav aids · 75 nm
- Barra de itabapoana light 21-18.80S 040-57.90W unlit until 08 sep 26Nav aids · 81.7 nm
- Survey operations 10 aug 26 thru 08 mar 27 by tug mce navegacao I in area bound by 22-48.38S 041-08.21W,…Surveys · 91 nm
- Underwater operations 1100Z to 2100Z daily 13 thru 22 aug by M/V comando b and M/V am kirti in 20-23.90S…Surveys · 99.9 nm
Worldwide now
83 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.