Surveys
Underwater operations 1100Z to 2000Z daily 06 thru 17 jul by M/V poseidon in 24-08.09S 046-10.29W
Western South Atlantic · Brazil · HYDROLANT 1517/23
- issued
- 2023-07-06 04:14Z
- status
- cancelled 2023-07-17 21:00Z (archive)
- self-cancels
- 2023-07-17 21:00Z
- authority
- NAVAREA V COASTAL 373/23 060318Z JUL 23.
- sea
- South Atlantic Ocean
- position
- -24.135, -46.172
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
WESTERN SOUTH ATLANTIC. BRAZIL. DNC 01. 1. UNDERWATER OPERATIONS 1100Z TO 2000Z DAILY 06 THRU 17 JUL BY M/V POSEIDON IN 24-08.09S 046-10.29W. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 172100Z JUL 23.
Activity windows · 12 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2023-07-06 11:00Z | 2023-07-06 20:00Z | — | 9 h |
| 2023-07-07 11:00Z | 2023-07-07 20:00Z | — | 9 h |
| 2023-07-08 11:00Z | 2023-07-08 20:00Z | — | 9 h |
| 2023-07-09 11:00Z | 2023-07-09 20:00Z | — | 9 h |
| 2023-07-10 11:00Z | 2023-07-10 20:00Z | — | 9 h |
| 2023-07-11 11:00Z | 2023-07-11 20:00Z | — | 9 h |
| 2023-07-12 11:00Z | 2023-07-12 20:00Z | — | 9 h |
| 2023-07-13 11:00Z | 2023-07-13 20:00Z | — | 9 h |
| … 4 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
200 within 180 nm since 1999 · 0 in the last 12 months · 0 in force now
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00
05
10
15
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24
- 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
- Underwater operations 1100Z to 2000Z daily 25 jan thru 01 feb in 24-10.04S 046-14.53W2024-01-24
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
- Odas buoy established in 24-06.36S 045-38.78WNav aids · 28.8 nm
- Laje da conceicao light 24-14.18S 046-41.46W unlit until 24 sepNav aids · 29.1 nm
- Ponta dos meros light 23-13.57S 044-20.83W unlit until 26 sepNav aids · 114.2 nm
Worldwide now
86 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.