Surveys
Underwater operations 1100Z to 2000Z daily 09 thru 28 feb by M/V gioegakis and M/V open seas I in 24-07.42S…
Western South Atlantic · Brazil-south Coast · HYDROLANT 397/22
- issued
- 2022-02-09 05:19Z
- status
- cancelled 2022-02-28 21:00Z (archive)
- self-cancels
- 2022-02-28 21:00Z
- authority
- NAVAREA V COASTAL S 119/22 090424Z FEB 22.
- sea
- South Atlantic Ocean
- position
- -24.124, -46.250
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
WESTERN SOUTH ATLANTIC. BRAZIL-SOUTH COAST. DNC 01. 1. UNDERWATER OPERATIONS 1100Z TO 2000Z DAILY 09 THRU 28 FEB BY M/V GIOEGAKIS AND M/V OPEN SEAS I IN 24-07.42S 046-15.00W. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 282100Z FEB 22.
Activity windows · 20 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2022-02-09 11:00Z | 2022-02-09 20:00Z | — | 9 h |
| 2022-02-10 11:00Z | 2022-02-10 20:00Z | — | 9 h |
| 2022-02-11 11:00Z | 2022-02-11 20:00Z | — | 9 h |
| 2022-02-12 11:00Z | 2022-02-12 20:00Z | — | 9 h |
| 2022-02-13 11:00Z | 2022-02-13 20:00Z | — | 9 h |
| 2022-02-14 11:00Z | 2022-02-14 20:00Z | — | 9 h |
| 2022-02-15 11:00Z | 2022-02-15 20:00Z | — | 9 h |
| 2022-02-16 11:00Z | 2022-02-16 20:00Z | — | 9 h |
| … 12 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
193 within 180 nm since 1999 · 1 in the last 12 months · 0 in force now
99
00
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
- Underwater operations 0500Z to 2000Z daily 16 thru 25 apr by M/V double diamond and M/V novo estado in…2024-04-16
- Underwater operations 1100Z to 2000Z daily 06 apr thru 05 may in 24-07.11S 046-08.76W2024-04-06
- 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
- Underwater operations in progress until 072000Z mar in 24-09.24S 046-12.68W2024-02-08
- Underwater operations 071100Z feb to 062000Z mar in 24-10.04S 046-14.53W2024-02-07
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
- Laje da conceicao light 24-14.18S 046-41.46W unlit until 24 sepNav aids · 25.1 nm
- Odas buoy established in 24-06.36S 045-38.78WNav aids · 33.1 nm
- Ponta dos meros light 23-13.57S 044-20.83W unlit until 26 sepNav aids · 117.7 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.