Surveys
Survey operations 1000Z to 2100Z daily 12 thru 26 mar in area bound by 21-13.07S 040-50.10W, 21-19.33S…
Brazil-southeast Coast · HYDROLANT 578/12
- issued
- 2012-03-11 23:32Z
- status
- cancelled 2012-03-26 22:00Z (archive)
- self-cancels
- 2012-03-26 22:00Z
- authority
- NAVAREA V E 331/12 112242Z MAR 12.
- sea
- South Atlantic Ocean
- position
- -21.258, -40.897
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
BRAZIL-SOUTHEAST COAST. 1. SURVEY OPERATIONS 1000Z TO 2100Z DAILY 12 THRU 26 MAR IN AREA BOUND BY 21-13.07S 040-50.10W, 21-19.33S 040-51.95W, 21-17.88S 040-57.52W, 21-11.62S 040-55.67W. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 262200Z MAR.
Activity windows · 15 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2012-03-12 10:00Z | 2012-03-12 21:00Z | — | 11 h |
| 2012-03-13 10:00Z | 2012-03-13 21:00Z | — | 11 h |
| 2012-03-14 10:00Z | 2012-03-14 21:00Z | — | 11 h |
| 2012-03-15 10:00Z | 2012-03-15 21:00Z | — | 11 h |
| 2012-03-16 10:00Z | 2012-03-16 21:00Z | — | 11 h |
| 2012-03-17 10:00Z | 2012-03-17 21:00Z | — | 11 h |
| 2012-03-18 10:00Z | 2012-03-18 21:00Z | — | 11 h |
| 2012-03-19 10:00Z | 2012-03-19 21:00Z | — | 11 h |
| … 7 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
610 within 180 nm since 2000 · 24 in the last 12 months · 15 in force now
00
05
10
15
20
25
26
- Underwater operations 0800Z to 1800Z daily 21 aug thru 04 sep by M/V capetan vassilis II and M/V comando b…2026-08-20
- 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
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
- Barra de itabapoana light 21-18.80S 040-57.90W unlit until 08 sep 26Nav aids · 5.1 nm
- Odas buoy temporarily established until 13 apr 27 in 21-34.20S 040-43.62WNav aids · 21 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 · 35.1 nm
- Underwater operations 281000Z jul to 192100Z aug by M/V umi polaris in area bound by 21-53.65S 040-49.70W,…Surveys · 40 nm
- Underwater operations in progress until 312300Z aug by M/V fugro vaquita in area bound by 21-35.43S…Surveys · 42.5 nm
- RACON at cabo sao tome light 22-02.52S 041-03.17W off air until 28 sepNav aids · 47.9 nm
- Underwater operations 1100Z to 2100Z daily 15 thru 29 aug by M/V comando b and M/V rosco banyan in 20-23.37S…Surveys · 65.9 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 · 66.1 nm
- Underwater operations 1100Z to 2100Z daily 12 thru 21 aug by M/V comando b and M/V faneromeni in 20-23.67S…Surveys · 66.4 nm
- Underwater operations 0800Z to 1800Z daily 08 thru 22 aug by M/V marsanne and M/V comando b in 20-23.57S…Surveys · 66.8 nm
- Underwater operations 0800Z to 1800Z daily 11 thru 25 aug by M/V comando b and M/V faneromeni in 20-23.00S…Surveys · 67.2 nm
- Underwater operations in progress until 27 aug by M/V navios felix and M/V comando b in 20-22.12S 040-08.38WSurveys · 68.2 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.