Surveys
Geophysical research operations 0800Z to 1700Z daily 31 mar thru 29 apr in area bound by 05-04.40S…
HYDROLANT 605/09
- issued
- 2009-03-28 04:24Z
- status
- cancelled 2009-04-29 18:00Z (archive)
- self-cancels
- 2009-04-29 18:00Z
- authority
- NAVAREA V N 675/09 280036Z MAR 09.
- sea
- South Atlantic Ocean
- position
- -5.051, -36.379
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
1. GEOPHYSICAL RESEARCH OPERATIONS 0800Z TO 1700Z DAILY 31 MAR THRU 29 APR IN AREA BOUND BY 05-04.40S 036-25.67W, 05-01.37S 036-25.67W, 05-01.37S 036-20.00W, 05-05.17S 036-20.00W. 2. CANCEL THIS MSG 291800Z APR.
Activity windows · 30 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2009-03-31 08:00Z | 2009-03-31 17:00Z | — | 9 h |
| 2009-04-01 08:00Z | 2009-04-01 17:00Z | — | 9 h |
| 2009-04-02 08:00Z | 2009-04-02 17:00Z | — | 9 h |
| 2009-04-03 08:00Z | 2009-04-03 17:00Z | — | 9 h |
| 2009-04-04 08:00Z | 2009-04-04 17:00Z | — | 9 h |
| 2009-04-05 08:00Z | 2009-04-05 17:00Z | — | 9 h |
| 2009-04-06 08:00Z | 2009-04-06 17:00Z | — | 9 h |
| 2009-04-07 08:00Z | 2009-04-07 17:00Z | — | 9 h |
| … 22 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
88 within 180 nm since 2000 · 0 in the last 12 months · 0 in force now
00
05
10
15
20
24
- Survey operations in progress until 241000Z apr by M/V taurus in area bound by 06-56.53S 034-49.48W,…2024-03-16
- Survey operations in progress until 092100Z mar by M/V taurus in area bound by 06-50.45S 034-45.38W,…2024-03-05
- Survey operations in progress until 182300Z may in areas bound by: a. 02-56.00S 038-00.20W, 02-56.00S…2023-05-18
- Underwater operations 0800Z to 2100Z daily 05 sep thru 05 mar 23 by M/V paracuru in 04-52.42S 036-22.45W2022-09-05
- Underwater operations 1100Z to 1900Z daily 15 thru 22 jun by M/V texas and M/V seamaster I in 05-42.08S…2021-06-14
- Underwater operations 1100Z to 1900Z daily 01 thru 06 jun by M/V texas and M/V seamaster I in 05-42.08S…2021-05-31
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
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.