Surveys
Survey operations 230900Z to 310900Z dec in area bound by 25-30.99S 047-26.90W, 25-05.15S 046-47.95W,…
Western South Atlantic · Brazil · HYDROLANT 2931/23
- issued
- 2023-12-22 06:52Z
- status
- cancelled 2023-12-31 10:00Z (archive)
- self-cancels
- 2023-12-31 10:00Z
- authority
- NAVAREA V 575/23 220403Z DEC 23.
- sea
- South Atlantic Ocean
- position
- -25.674, -46.177
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
WESTERN SOUTH ATLANTIC. BRAZIL. DNC 01. 1. SURVEY OPERATIONS 230900Z TO 310900Z DEC IN AREA BOUND BY 25-30.99S 047-26.90W, 25-05.15S 046-47.95W, 25-07.22S 046-37.65W, 25-01.08S 046-20.72W, 25-01.71S 046-15.58W, 24-55.92S 045-52.51W, 25-09.88S 045-40.24W, 25-21.50S 045-27.65W, 25-22.50S 045-29.09W, 25-55.78S 044-59.80W, 26-35.92S 045-44.98W, 25-56.05S 046-06.76W, 26-12.18S 046-28.36W, 25-53.43S 047-18.17W, 25-44.88S 047-10.64W. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 311000Z DEC 23.
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2023-12-23 09:00Z | 2023-12-31 09:00Z | — | 192 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
This area · survey operations
366 within 180 nm since 1999 · 1 in the last 12 months · 1 in force now
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00
05
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15
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25
26
- Scientific bouy, yellow, fl y 20 sec established in 27-24.38S 047-15.92W2026-02-27
- Underwater operations 1100Z to 2000Z daily 06 apr thru 05 may in 24-07.11S 046-08.76W2024-04-06
- Survey operations in progress until 30 apr by M/V ramform victory towing ten 8800 meter long cables in area…2024-04-03
- Survey operations in progress until 31 mar by M/V ramform victory towing ten 8800 meter long cables in area…2024-03-07
- Underwater operations 1100Z to 2000Z daily 28 feb thru 26 mar by M/V big john VI, M/V rodrigo neto I and M/V…2024-02-28
- Survey operations in progress until 01 mar by M/V ramform victory towing ten 8800 meter long cables in area…2024-02-16
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
- Laje da conceicao light 24-14.18S 046-41.46W unlit until 24 sepNav aids · 90.8 nm
- Odas buoy established in 24-06.36S 045-38.78WNav aids · 98.5 nm
- Scientific bouy, yellow, fl y 20 sec established in 27-24.38S 047-15.92WSurveys · 119.3 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.