Surveys
Underwater operations 230900Z mar to 010300Z apr vicinity 26-27.15S 046-33.77W
Brazil-south Coast · HYDROLANT 737/13
- issued
- 2013-03-23 00:12Z
- status
- cancelled 2013-04-01 04:00Z (archive)
- self-cancels
- 2013-04-01 04:00Z
- authority
- NAVAREA V S 357/13 230002Z MAR 13.
- sea
- South Atlantic Ocean
- position
- -26.453, -46.563
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
BRAZIL-SOUTH COAST. 1. UNDERWATER OPERATIONS 230900Z MAR TO 010300Z APR VICINITY 26-27.15S 046-33.77W. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 010400Z APR 13.
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2013-03-23 09:00Z | 2013-04-01 03:00Z | — | 210 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
310 within 180 nm since 1999 · 3 in the last 12 months · 2 in force now
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05
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15
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25
26
- Underwater operations 1000Z to 2000Z daily until 25 aug by vessel nomar in 24-07.27S 046-09.30W2026-08-20
- Survey operations 10 thru 17 aug by M/V ramform titan towing 12 9000 meter long cables in area bound by…2026-08-09
- 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
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
- Scientific bouy, yellow, fl y 20 sec established in 27-24.38S 047-15.92WSurveys · 68.5 nm
- Ponta da galheta light 27-34.55S 048-24.99W unlit until 31 augNav aids · 119.9 nm
Worldwide now
84 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.