Surveys
Underwater operations 1000Z to 2000Z daily until 25 aug by vessel nomar in 24-07.27S 046-09.30W
South Atlantic · Brazil · HYDROLANT 1621/26
- issued
- 2026-08-20 00:06Z
- status
- cancelled 2026-08-20 14:45Z (dropped from inforce)
- self-cancels
- 2026-08-25 21:00Z
- sea
- South Atlantic Ocean
- position
- -24.121, -46.155
- source
- nga_inforce · first seen 2026-08-21 14:32Z
Original warning text
SOUTH ATLANTIC. BRAZIL. 1. UNDERWATER OPERATIONS 1000Z TO 2000Z DAILY UNTIL 25 AUG BY VESSEL NOMAR IN 24-07.27S 046-09.30W. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 252100Z AUG 26.
This area · survey operations
202 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 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 · 27.9 nm
- Laje da conceicao light 24-14.18S 046-41.46W unlit until 24 sepNav aids · 30.2 nm
- Ponta dos meros light 23-13.57S 044-20.83W unlit until 26 sepNav aids · 113 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.