Surveys
Survey operations 221300Z to 302100Z sep in area bound by 23-39.0S 043-53.7W, 23-39.0S 043-50.4W, 23-42.0S…
Western South Atlantic · Brazil-south Coast · HYDROLANT 2378/21
- issued
- 2021-09-22 03:39Z
- status
- cancelled 2021-09-30 22:00Z (archive)
- self-cancels
- 2021-09-30 22:00Z
- authority
- NAVAREA V COASTAL S 650/21 220311Z SEP 21.
- sea
- South Atlantic Ocean
- position
- -23.675, -43.867
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
WESTERN SOUTH ATLANTIC. BRAZIL-SOUTH COAST. DNC 01. 1. SURVEY OPERATIONS 221300Z TO 302100Z SEP IN AREA BOUND BY 23-39.0S 043-53.7W, 23-39.0S 043-50.4W, 23-42.0S 043-50.4W, 23-42.0S 043-53.7W. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 302200Z SEP 21.
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2021-09-22 13:00Z | 2021-09-30 21:00Z | — | 200 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
494 within 180 nm since 2000 · 4 in the last 12 months · 1 in force now
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05
10
15
20
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 in progress until 24 aug by M/V sea 1 dorado in area bound by 24-53.20S 042-47.12W,…2026-08-19
- Underwater operations in progress until 280259Z aug by M/V siem pilot in 24-35.02S 042-15.37W2026-08-19
- Survey operations 10 aug 26 thru 08 mar 27 by tug mce navegacao I in area bound by 22-48.38S 041-08.21W,…2026-08-09
- Underwater operations in progress until 19 may in 23-04.0S 043-02.5W2024-04-21
- Survey operations 17 apr thru 08 may by M/V artemis odyssey in area bound by 25-04.49S 042-10.72W, 25-05.99S…2024-04-17
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
Nearby now · within 120 nm
- Ponta dos meros light 23-13.57S 044-20.83W unlit until 26 sepNav aids · 37.7 nm
- Hazardous operations in progress until 060400Z jun 27 in area bound by 24-39.87S 042-29.30W, 24-39.78S…Exercises · 94.8 nm
- Odas buoy established in 24-06.36S 045-38.78WNav aids · 101 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.