Surveys
Underwater operations 1100Z to 2000Z daily 06 thru 14 dec in: a. 24-08.45S 046-10.59W
Western South Atlantic · Brazil · HYDROLANT 2823/23
- issued
- 2023-12-06 22:23Z
- status
- cancelled 2023-12-14 21:00Z (archive)
- self-cancels
- 2023-12-14 21:00Z
- authority
- NAVAREA V COASTAL 698/23 062136Z DEC 23.
- sea
- South Atlantic Ocean
- position
- -24.140, -46.214
- 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 14 DEC IN: A. 24-08.45S 046-10.59W. B. 24-07.55S 046-14.01W. C. 24-09.97S 046-17.21W. D. 24-08.47S 046-11.23W. E. 24-08.88S 046-14.63W. F. 24-07.21S 046-09.54W. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 142100Z DEC 23.
Activity windows · 9 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2023-12-06 11:00Z | 2023-12-06 20:00Z | — | 9 h |
| 2023-12-07 11:00Z | 2023-12-07 20:00Z | — | 9 h |
| 2023-12-08 11:00Z | 2023-12-08 20:00Z | — | 9 h |
| 2023-12-09 11:00Z | 2023-12-09 20:00Z | — | 9 h |
| 2023-12-10 11:00Z | 2023-12-10 20:00Z | — | 9 h |
| 2023-12-11 11:00Z | 2023-12-11 20:00Z | — | 9 h |
| 2023-12-12 11:00Z | 2023-12-12 20:00Z | — | 9 h |
| 2023-12-13 11:00Z | 2023-12-13 20:00Z | — | 9 h |
| … 1 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
198 within 180 nm since 1999 · 0 in the last 12 months · 0 in force now
99
00
05
10
15
20
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
- Laje da conceicao light 24-14.18S 046-41.46W unlit until 24 sepNav aids · 26.7 nm
- Odas buoy established in 24-06.36S 045-38.78WNav aids · 31.2 nm
- Ponta dos meros light 23-13.57S 044-20.83W unlit until 26 sepNav aids · 116.4 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.