Surveys
Underwater operations daily from 01 to 30 September by vessel Coral do Atlantico in South Atlantic off Brazil. Wide berth requested.
South Atlantic · Brazil · HYDROLANT 1742/26
- issued
- 2026-09-03 13:19Z
- status
- cancelled 2026-09-03 13:50Z (dropped from inforce)
- self-cancels
- 2026-09-30 21:00Z
- sea
- South Atlantic Ocean
- position
- -23.313, -40.174
- vessel
- M/V CORAL DO ATLANTICO
- source
- nga_inforce · first seen 2026-09-03 15:02Z
Original warning text
SOUTH ATLANTIC. BRAZIL. 1. UNDERWATER OPERATIONS 1000Z TO 2000Z DAILY 01 THRU 30 SEP BY M/V CORAL DO ATLANTICO IN AREA BOUND BY 23-20.75S 040-08.10W, 23-21.00S 040-06.50W, 23-19.75S 040-09.56W, 23-17.81S 040-09.56W, 23-17.76S 040-13.45W. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 302100Z SEP 26.
Activity windows · 30 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2026-09-01 10:00Z | 2026-09-01 20:00Z | — | 10 h |
| 2026-09-02 10:00Z | 2026-09-02 20:00Z | — | 10 h |
| 2026-09-03 10:00Z | 2026-09-03 20:00Z | — | 10 h |
| 2026-09-04 10:00Z | 2026-09-04 20:00Z | — | 10 h |
| 2026-09-05 10:00Z | 2026-09-05 20:00Z | — | 10 h |
| 2026-09-06 10:00Z | 2026-09-06 20:00Z | — | 10 h |
| 2026-09-07 10:00Z | 2026-09-07 20:00Z | — | 10 h |
| 2026-09-08 10:00Z | 2026-09-08 20:00Z | — | 10 h |
| … 22 more | |||
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
831 within 180 nm since 2000 · 37 in the last 12 months · 4 in force now
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05
10
15
20
25
26
- Underwater operations 1100Z to 2100Z daily 04 thru 18 sep by M/V charlie and M/V comando b in 20-24.27S…2026-09-03
- Underwater operations 1100Z to 2100Z daily 04 thru 18 sep by M/V comando b and M/V linden trader in…2026-09-03
- Underwater operations 1100Z to 2100Z daily 03 thru 17 sep by M/V commander k and M/V comando b in 20-23.90S…2026-09-02
- Underwater operations 0800Z to 1800Z daily 28 aug thru 11 sep by M/V comando b and M/V elati in 20-23.40S…2026-08-27
- Underwater operations 0800Z to 1800Z daily 27 aug thru 10 sep by M/V comando b and M/V angelina the great in…2026-08-26
- Underwater operations 0800Z to 1800Z daily 24 aug thru 07 sep by M/V spar aries and M/V comando b in…2026-08-23
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
- Underwater operations in progress until 140001Z nov by M/V fugro vaquita in area bound by 22-03.00S…Surveys · 31.7 nm
- Underwater operations 1000Z to 2000Z daily until 02 nov 26 by M/V fugro vaquita in: a. 22-26.32S 040-25.47WSurveys · 53.9 nm
- Underwater operations in progress until 312300Z aug by M/V fugro vaquita in area bound by 21-35.43S…Surveys · 88.6 nm
- RACON at cabo sao tome light 22-02.52S 041-03.17W off air until 28 sepNav aids · 90.5 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 · 95.4 nm
Worldwide now
70 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.