Surveys
Survey operations 091100Z to 121400Z jan by M/V l'espoir towing 2500 meter long cable along trackline…
HYDROLANT 87/01
- issued
- 2001-01-09 07:05Z
- status
- cancelled 2001-01-12 15:00Z (archive)
- self-cancels
- 2001-01-12 15:00Z
- cancels
- HYDROLANT 4279/00HYDROLANT 3/01
- authority
- NAVAREA V 47/01; NAVAREA V 46/01 090400Z JAN 01
- sea
- South Atlantic Ocean
- position
- -23.874, -42.077
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
1. SURVEY OPERATIONS 091100Z TO 121400Z JAN BY M/V L'ESPOIR TOWING 2500 METER LONG CABLE ALONG TRACKLINE BETWEEN 23-54.7S 041-41.1W AND 23-50.2S 042-28.1W. TWO MILE BERTH REQUESTED. 2. CANCEL HYDROLANT 4279/00 AND 3/01. 3. CANCEL THIS MSG 121500Z JAN.
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2001-01-09 11:00Z | 2001-01-12 14:00Z | — | 75 h |
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
737 within 180 nm since 2000 · 10 in the last 12 months · 8 in force now
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26
- Survey operations in progress until 24 aug by M/V sea 1 dorado in area bound by 24-53.20S 042-47.12W,…2026-08-19
- Underwater operations in progress until 280259Z aug by M/V siem pilot in 24-35.02S 042-15.37W2026-08-19
- Survey operations 10 aug 26 thru 08 mar 27 by tug mce navegacao I in area bound by 22-48.38S 041-08.21W,…2026-08-09
- Survey operations in progress until 09 jul 27 by M/V bgp dragon towing 250 meter long cable in area bound by…2026-08-08
- Underwater operations in progress until 170259Z aug in 22-22.48S 040-25.05W2026-08-06
- Underwater operations 281000Z jul to 192100Z aug by M/V umi polaris in area bound by 21-53.65S 040-49.70W,…2026-07-27
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
Timeline
- Survey operations in progress until 162300Z jan by M/V l'espoir towing 2500 meter long cable along trackline…cancels · 2000-12-30
- Morro taipus light 13-57.4S 038-56.5W unlitcancels · 2001-01-01
- Survey operations in progress until 162300Z jan by M/V l'espoir towing 2500 meter long cable along trackline…replaced · 2000-12-30
- Morro taipus light 13-57.4S 038-56.5W unlitreplaced · 2001-01-01
Nearby now · within 120 nm
- Hazardous operations in progress until 060400Z jun 27 in area bound by 24-39.87S 042-29.30W, 24-39.78S…Exercises · 52.1 nm
- Survey operations 10 aug 26 thru 08 mar 27 by tug mce navegacao I in area bound by 22-48.38S 041-08.21W,…Surveys · 83.2 nm
- Hazardous operations 0800Z to 2100Z daily 18 thru 20 aug in area within ten miles of 25-06.00S 041-13.00WExercises · 87.3 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.