Surveys
Western south atlantic DNC 01
HYDROLANT 4074/17
- issued
- 2017-12-15 22:33Z
- status
- cancelled 2017-12-24 00:01Z (archive)
- authority
- NAVAREA V COASTAL S 1012/17 152204Z DEC 17.
- sea
- South Atlantic Ocean
- position
- -26.492, -44.515
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
WESTERN SOUTH ATLANTIC
DNC 01.
1. SURVEY OPERATIONS IN PROGRESS UNTIL 23 DEC BY
M/V BGP CHALLENGER TOWING 12000 METER LONG CABLE
IN AREAS BOUND BY:
A. 26-38S 044-53W, 26-34S 044-58W,
26-21S 044-23W, 26-24S 044-18W,
26-25S 044-11W, 26-25S 044-03W,
26-41S 044-49W.
B. 27-27S 045-38W, 27-24S 045-43W,
27-37S 045-31W, 27-40S 045-27W,
27-45S 045-15W, 27-41S 045-20W,
27-31S 045-34W.
WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 24 DEC 17.
This area · survey operations
587 within 180 nm since 1999 · 4 in the last 12 months · 1 in force now
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00
05
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15
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25
26
- Underwater operations 1000Z to 2000Z daily until 25 aug by vessel nomar in 24-07.27S 046-09.30W2026-08-20
- 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
- Scientific bouy, yellow, fl y 20 sec established in 27-24.38S 047-15.92W2026-02-27
- Survey operations 17 apr thru 08 may by M/V artemis odyssey in area bound by 25-04.49S 042-10.72W, 25-05.99S…2024-04-17
- Underwater operations 1100Z to 2000Z daily 06 apr thru 05 may in 24-07.11S 046-08.76W2024-04-06
Season · when survey operations happen here
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M
A
M
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month of issue, all years in the archive
Nearby now · within 120 nm
Nothing else in force 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.